david culver is in tapachula, mexico and shimon prokupecz is at the roosevelt hotel in new york city. david, what are you seeing on the ground? >> reporter: phil, you get a sense of this being a constant flow, just an influx of migrants that is 24/7. it is always after 5:00 in the morning here and this is just one of the gathering points here and you notice hint mebehind me you have dozens it not thousands because it stretches out block, they are here waiting to be processed for either transit documents or asylum claims but not to say here, but rather to continue on to the u.s. as you touchdown in southern mexico, be ready to share the road with migrants. we spot group after group marching north. many of those who just illegally crossed into mexico here, this outdoor park turned migration processing center. in it folks camping out for days weeks, waiting to climbing asylum in mexico or to get transit documents to pass through legally. or to sign up for -- some aren't quite sure what they are signing up for, but they do it anyway. rafael from outside havana, at 26, he sold his house, l

sh sh shimon prokupecz has more. >> we're going to offer you food and water right away. >> dr. ted long is proud of the operation the city has established here. >> everything that we've developed in new york city is to meet the needs that were not met for people coming from texas so far. so here, whether it's screening for communicable disease, if you're a pregnant woman, giving you prenatal care or screening you for important mental health conditions you might have like depression, we do it all here. >> it really catches your eye to see so many kids running through the halls of the roosevelt hotel. almost like a playground. so many kids. the city says 20,000 migrant children have come through new york to far. >> why did you come to america? she's 23 years old and escaping violence in ecuador and says he came here for her daughter who has a physical disability. how are you feeling? she says she's happy she's here now and scared to go back to ecuador. i'm afraid that my daughter will die there if she can't get medical attention. i need to place to stay. i think they're going to

shimon prokupecz. >> one of the worst stories i've heard of.rney general merrick garland will testify on capitol hill in front of his harshest critics who have repeatedly accused him of politicizing the department of justice. there will be fireworks for sure. we are live in the hearing in just a bit. min alone, you may be missing a critical piecece... preservision. preservision areds 2 contains the only clinically proven nutrient formulaa recommendeded by the national eye institute to help reduce the risk of momoderate to advanced amd progression. preservivision is backed by 20 years of clinical studies. so ask your doctor about adding preservision and fill in a missing piece of your plan. like i did with preservision. now with ocusorb better absorbing nutrients. [stomach growling] it's nothing... sounds like something. ♪when you have nausea, heartburn, indigestion♪ ♪upset stomach, diarrhea♪ pepto bismol coats and soothes for fast relief when yoneed it most. [coughing] when caroline has a cough she takes rotussin. so, she can have those one on

cnn's shimon prokupecz is live with details.s story has been rattling in my brain since i first saw the headlines, what's actually happening here? >> right now, the dea is involved and the nypd, federal prosecutors, they believe this was a drug trafficking ring that was being run out of this day care, perhaps this day care uses some kind of front to hide what was going on there. and pretty significant in the sense that what they found there after this 1-year-old who died, they believe because of an opiate overdose, fentanyl that was in this day care center, somehow came into contact with the 1-year-old and three other kids and if it wasn't for the quick actions by emergency responders, using narcan to save the lives of these other three kids, we could perhaps be talking about a worst-case scenario. so now the feds are involved. they have charged the two individuals, the day care owner, mendez, who's 41 and another individual, carlisto, who was living inside the location, with conspiracy to deliver narcotics and possession with i