>> jimmy: thanks to rob lowe, ike barinholtz and kali uchis, apologies to matt damon. we did run out of time for him. "nightline" is next. thank you for watching, goodnight. ♪ this is "nightline." >> juju: tonight, lone star standoff. as the immigration debate heats

up -- >> y'all don't understand [ bleep ] you do hurts our community. >> juju: we're on the southerner border inside the latest flashpoint creating fear and division in texas. >> we're not trying to target any particular race, color, creed, anything like that. we're trying to secure our border. >> juju: the new law leaving community members feeling targeted. >> are you worried that if, as before, this goes into effect, you could be detained and deported? >> yes. >> juju: the controversial thing it's asking officers on the ground to do. plus, dry january. >> where are my dry january people at? >> juju: the new year's resolution gathering momentum. more young people making the choice to go booze-free sharing online. >> it's a moment for us to readjust how we culturally look at alcohol. >> juju: the trend for some becoming a lifestyle. >> i want to show people there's a different way to live and it doesn't have to involve alcohol. >> juju: 30 days to a new you? the surprising health benefits you might not know.

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♪ >> juju: thanks for joining us. tonight, the latest showdown at the southern border. tensions rising as one of the

harshest immigration laws in the country, texas state law sb-4, is set to go into effect in march. it would give unprecedented authority to local judges and police to arrest and remove some migrants from the u.s., a power only the federal government has had. some view it as the answer to the growing crisis. others fear it will lead to racial profiling. here's abc's maria elena salinas. >> reporter: living in el paso, texas, for nearly three decades since she was brought over by her parents when she was 11. she and her husband have two businesses and a home in the border town. her husband and three children are u.s. citizens, but aracelli, she lives her life in fear. >> they say, you grow here, you're welcome here. but i don't feel like -- because when i go to my check-in appointments, the people there,

they treat you different. >> reporter: even though you've been here since you were a child? 28 years? you still feel like this is not your city? >> yes. >> reporter: aricelli asked we don't show her face since she is still in the process of getting legal status, a process that has lasted nearly 20 years and involves check-ins with federal officials every two months. every year, you live in limbo. every year, you don't know if the following year, you're going to be deported? >> yes. >> reporter: how does that affect the dynamic of your life and your family life? >> it's very insecure. you don't know what's going to be tomorrow. i tell my kids that any time, they can deport me. >> reporter: and now a new state law could make aricelli's situation even more complicated. senate bill 4, or sb-4, makes it a state crime to cross the

texas/mexico border illegally, authorizing local law enforcement to arrest and detain some migrants and also gives state judges the power to order some migrants who move from the u.s. an authority that currently only the federal government has. those caught and prosecuted could face up to six months, while repeat offenders could face a second-degree felony and up to 20 years in prison. the law prohibits police from arresting migrants in public or private schools, places of worship, and health care facilities. governor greg abbott signed the bill into law just last month, and it's scheduled to go into effect on march 5th. but it's already become a flashpoint among activists and politicians across the state and in washington. >> we're not trying to target any particular race, color, creed, anything like that. we're trying to secure our border, because the biden administration completely fails and refuses to do so. >> reporter: the doj, immigrant

rights groups, and el paso county have filed lawsuits calling the law unconstitutional. >> we are telling texas that they cannot pass racist laws like this. this bill, sb-4, is completely unconstitutional. and that it should not see the light of day while we are arguing it in court. >> reporter: the law comes as texas struggles to deal with a record number of migrants at the border. in fiscal year 2023, there were more than 2.4 million migrant encounters at the southern border, the highest number ever recorded. knowing that immigration is a federal issue, why create sb-4? >> first of all, i don't think it is entirely a federal issue. i believe that all states, including texas, have the absolute right, authority, and ability to secure their state. >> reporter: representative david spiller is one of the authors and cosponsors of sb-4. >> we're not going after people under sb-4 that have been here three years, five years, ten

years, 20 years. we're not going after someone's grandmother who's been here 50 years. that's not the purpose of sb-4. we're trying to combat the problem that we have on the border. >> reporter: but so far, the law has created a lot of fear and confusion. the proponents of sb-4 claim that this law is meant for recently arrived immigrants, not people who have been here for more than two years. in practice, is that accurate? >> absolutely not. i would say to them, you should have done a better job writing that law. it applies to every single person in the state of texas, no matter how far away or close they are to the border, who does not have lawful status or proof of lawful status at the time they're stopped by law enforcement. >> reporter: jennifer provides legal support to migrants through los americas, one of the groups legally challenging the law. she's concerned how this law could impact her clients like aricelli. >> she has a reason to be afraid. when we talk to her, we understand, we appreciate why

getting in a car and going on the highway, where there are police, would be terrifying. because why should she trust that that police officer would understand the complexity of her case and not punish her and put her in jail and separate her from her family? >> reporter: are you worried that if sb-4 goes into effect on march 5th, like it's scheduled to, that you could be detained and deported? >> yes. >> reporter: is there anything that you can do about that? >> hm, no, i can't do anything because the only ones that have the rights -- because like i said, this is not my country. >> reporter: are you afraid? >> i'm afraid, yes. >> reporter: she's been waiting for an answer for years as the immigration system faces a backlog. an unprecedented 3 million pending cases. most of them asylum seekers. >> see this canal too, this is very deep -- >> reporter: with sb-4, critics worry new strain could be put on local and state resources, including law enforcement.

the border is here, and just a few yards away you have people's homes. >> correct, correct. this is a unique community, like i said. we've got the mexican border 100 yards here. and we have somebody's backyard right there. you know, so the community is at the forefront of this issue. >> reporter: commander ryan rutti of el paso county sheriff's department took us to the border to see firsthand what could become a key area for his deputies to patrol under sb-4. what is your assessment of the new law? >> these are federal government responsibilities. it's going to deplete our resources, deplete our ability to respond to the local community. it causes distrust in a community such as this. if you're a victim of crime, we want to know. because no matter how you got here, who you are, we want to hold those who committed the crime against you accountable. >> reporter: it makes people fearful in coming forward and

talking about being victims of crimes or witnesses to crime if they feel that you might detain them and deport them? >> that's absolutely right. >> reporter: the commander has another concern, too. >> the immigration law is very complicated on the federal side. we do not have training to identify federal documents that allow people to be in this country. we do not have the expertise. we do not have the databases to tell us if somebody is a united states citizen or not. so there's a risk of arresting somebody that is actually a united states citizen. >> reporter: 82% of residents in el paso county being of hispanic descent, critics fear the law could lead to racial profiling. commander ruttia emphasizes any stop or arrest could require probable cause, like directly seeing someone cross the border. what does enforcing that law look like for you? >> a law on the books is placed

on there. if our officers come across it, they'll make arrests accordingly. but it's not going to be prioritized by the sheriff's office. >> reporter: sb-4 passed largely along party lines, sparking conflict on the texas house floor. >> you're my friend, man, i love you. but this [ bleep ] hurts. y'all don't understand the [ bleep ] you do hurts our community. and y'all don't understand that. y'all don't live in our [ bleep ] skin. >> reporter: representative armando wally was angered when his colleagues cut short the debate over the bill's amendments. for him, it's personal. >> i come from a mixed status family. my father was deported when i was in junior high, high school. i have personal lived experience with this. >> reporter: what aspect of sb-4 concerns you the most? >> one is, given this awesome authority to local lawful to determine somebody's citizenship status, but also that judge. you would get detained if the police officer cannot determine if you're in this country legally or not. so then i get detained, then i get jailed, my local jail,

right? the taxpayers are footing the bill for somebody like me to be housed. >> reporter: representative wally's district is 82% dispanic. >> there's a lot of trepidation, there's a lot of anxiety. because you're given this awesome authority, for law enforcement to make a spot determination on an encounter. >> reporter: she works with undocumented immigrants for a network for human rights. she herself is undocumented and works to teach others about their rights. >> reporter: you say that you are not afraid, but if sb-4 does go into effect, will that change the way that you feel? >> no rr #

. >> reporter: some feel empowered. others fearful. but many have a similar message. what do you want to say to governor abbott and the legislators that approved this law? >> we're all humans. and we all have feelings. and family. >> juju: our thanks to maria elena. when we come back, dry january and its hidden health benefits. (vo) sail through the heart of historic cities and unforgettable scenery with viking. unpack once, and get closer to iconic landmarks, local life, and cultural treasures. because when you experience europe on a viking longship,

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♪ >> juju: welcome back. whether you call it dry, sober, or alcohol-free, giving up booze is clearly having a moment this dry january. according to the cdc, 1 in 6 adults binge drink. but a growing number of people are making the decision to forgo alcohol, and health experts say they're on to something. here's abc's will ganss. >> is it even cool to drink alcohol anymore? now it's cringe. why my doing this? >> reporter: it feels like dry january is everywhere. with people getting candid on tiktok. >> where are my dry january people at? >> this is my first-ever time doing dry january, and, like, i am actually struggling. >> reporter: mixing mocktails on social media. >> dry january, the idea behind

it is simply re-evaluating your relationship with challenge and taking a break from it. i think so often we don't realize how alcohol is associated with so many of our social events, so many of our daily life activities. it's a moment for to us readjust how we culturally look at alcohol. >> reporter: it's a social media trend that for some turns into something more. celebrities like tom holland saying how dry january led him to a sober lifestyle year-round. >> i started to just give up for january. i just wanted to do dry january. and all i could think about was having a drink. if i can do six months without alcohol, then i can prove to myself i don't have a problem. and by the time i had got to june 1st, i was the happiest i'd ever been in my life. >> reporter: no matter why people decide to be a stain, medical doctors say taking a break from broos has immediate health benefits. >> many people don't realize that they might be participating in binge drinking. having more than three to 4 alcoholic beverages in one

experience. that directly affects your sleep that night. also your health in the long run. your gastrointestinal health. so on and on forth. your risk of cancer. >> reporter: from daybreakers, early morning raves where people turn in bottomless brunch for beats, to bars where booze isn't even on the menu, companies are crashing in. stars releasing nonalcoholic products like katy perry's booze-free beverage line de soir. blake lively's seltzer, betty buzz. more and more embracing life without alcohol. >> congratulations. your first dry january. >> yes. >> how's it going so far? >> it's going good. it's going very dry. >> reporter: austin burton has been posting his past month on tiktok. >> it's not because i have a drinking problem. i just have a problem with what comes with drinking. my recovery's off, sleep's off. my mental game is a little slower than usual. so i just wanted to take a break from it all. it wasn't necessarily, okay, i'm

going 100% sober. but let's just see what happens when i can take a break, do something for myself, my own decision. and i haven't really looked back since. >> reporter: he decided to stop drinking last september and used dry january to keep the momentum going. austin isn't alone. in fact, 28% of college-aged adults are going booze-free entirely. you're 33. i'm 31. i feel like our age in particular, and younger, are really re-evaluating our relationships with alcohol. do you have any sense of why that might be? >> i think it's because of these conversations. i don't remember ever hearing any of this growing up. like, i remember watching my parents and their friends have a wine cooler and a cigarette to relax. >> reporter: kelsey sorensen has documented what she says are three solid sober years. >> i've had tried several times to do a dry january, to take 30

days, to not drink for a weekend. and i kept coming up short. and that's when i really was like, if i can't remove this thing from my life easily, it has to be problematic. give sobriety a year, try it out for a year, see how you like it. if you don't, your misery is refunded for free. >> reporter: she's found a community online by sharing her journey. >> if this resonates with you at all, you are not alone. i am over two years alcohol-free now in my life. incredibly different. >> reporter: what advice do you give to someone who is taking that very first step in re-evaluating their relationship with alcohol? >> yeah, just take it day by day. i think we can get really worried about forever. i mean, when i first started this journey, i was like, what am i going to do at my wedding? at my bachelorette party? just take it one day at a time. hey, i'm not going to drink today, see how i feel tomorrow. >> reporter: kelsey and austin have different journeys but both are part of a growing community that will continue far beyond

dry january. >> i just want to keep going and see where this takes me. i had no idea there were so many people doing it. it's a movement. it's something. people are really into it because of that. >> juju: our thanks to will. when we return, health scares in the british royal family. i won't let me moderate to severe plaque psoriasis symptoms define me... emerge as you. with tremfya®, most people saw 90% clearer skin at 4 months... ...and the majority stayed clearer, at 5 years. serious allergic reactions may occur. tremfya® may increase your risk of infections and lower your ability to fight them. tell your doctor if you have an infection or symptoms or if you had a vaccine or plan to. emerge as you. emerge tremfyant®. ask you doctor about tremfya®. (crowd cheers) sore throat got your tongue? mucinex instasoothe sore throat medicated drops.

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♪ >> juju: finally tonight, members of the british royal family undergoing medical treatments. kensington palace today revealing princess kate has undergone abdominal surgery and could remain hospitalized for two weeks. the palace asking for privacy but saying the princess' condition is not cancerous. not long after, buckingham palace announcing king charles will also undergo a procedure next week for an enlarged prostate, saying his majesty's condition is benign. get well soon. that's "nightline." watch all our episodes on hulu. see you back here tomorrow.