yards. it participated in the crash. it was the largest solar. . >> we have an gul humanitarian crisis on the border. >> there's a direct correlation between the dangerous places and where the unaccompanied youth are coming from. >> a migration crisis creating a fire storm. >> tens of thousands of children from central america showed up at the border, trying to enter the united states alone. >> you can't send the children here. >> the obama administration took

unprecedented measures to stem the tried. one year later the crisis disappeared, or has it. we travel to mexico's southern border to find out the true story, and on to honduras, where violence is pushing people out. and we speak to the families torn apart. >> this is a river. historically, it's where migrants cross from guatemala to mexico on a journey north to the united states. these transport goods and people across the border. it's a bustling black market.

>> how do i get on, just like this? >> jump. >> jump. okay. >> right now we are on the river in between mexico and guatemala. that's guatemala there and mexico there. you see the bridge, that's the bored -- border crossing. it doesn't deter migrants. everything you see, boats in the river, everything that is happening is illegal. >> the majority of people. if they say give me some money, i haven't got nothing. i start talking to them. and they say - the first thing

they say is they are hiding, you know, or they are running for the people. they get killed. they want to kill them or something. >> this man operates, and says migrants are operating new routes to avoid being accustomed. >> they were not afraid to cross the river. there's another point to cross. it's dangerous. >> on this day there were fewer migrants faking the risk. we took it south across the border into guatemala, where many are waiting to cross into mexico. >> so we crossed over the border from mexico, we are in guatemala, and heading to a shelter to see if there are any migrants there. that's an ox.

tens of thousands of migrants pass through guatemala on the way to the u.s. this shelter is the last place yes stay before crossing the river. they won't allow us in to speak to people, but this is a common route. it's not long before we meet someone making the journey north. in 35-year-old guatemalan man says he was kicked out of the u.s. he tried to enter the united states three times unsuccessfully. . >> the crackdown in mexico is

real. under pressure from the u.s. efforts to stop the migrants is part of a programme launched by mexican authorities after president obama declared a crisis of central american child migrants entering the u.s. since then the number of children captured crossing into the united states is down by half so far this year. the number of children detained and departed is sky rocketing. up 60% at the beginning of this year compared to the same period in 2014. >> what is new is an effort that migrant shelters are going after them. pursuing them in a way they have not before, making it difficult for migrants to travel north and

many times we see a greater risk. >> maureen works for the washington office of latin america. and she has concerned about what happens when migrants are detained. >> a lot of people leaving central america probably qualify for protection. we are not talking about the migrant that travels home. we are talking about families fleeing communities or force the recruitment by gangs, extortion or girls fearing being sent to prostitution. we are concerned it's done in a man or or in a way stopping protections. >> meier says additional

checkpoints and security pushed migrants on to difficult or dangerous routes in efforts to evade authorities. >> migrants have been victims of horrific crimes including extortion, robbery, sexual assault. i think a lot of these situations have not gone away. with this enforcement. they seem to exacerbate if. young people like christian are still coming despite the risks. he said he was attacked with a knife during the trip. >> can you describe what happened to you last night? the 18-year-old is among dozens packed into this mexican shelter near the guatemala border. is this the first time you are trying to come to the united states? >> entire families from central

america stopped for food and rest on the journey to the u.s. >> what is the most difficult part.

team like christian opped school at sixth grade... but around the world. getting the news from the people who are affected. >> people need to demand reform... >> ali velshi on target weeknights 10:30p et

[ ♪ ] the only way to get better is to challenge yourself,

and that's what we're doing at xfinity. we are challenging ourselves to improve every aspect of your experience. and this includes our commitment to being on time. every time. that's why if we're ever late for an appointment,

we'll credit your account $20. it's our promise to you. we're doing everything we can to give you the best experience possible. because we should fit into your life. not the other way around.

more than 35,000 migrants deported from mexico came from honduras, one look at the conditions, it's not hard to understand why so many would want to leave. while some hope to escape violence, many are looking for an opportunityty to have a bett life. about 65% of families in honduras live in poverty. >> there is a role thinking longer term on how do you change the conditions. maureen says the flow of migrants to the united states is not going away any time soon. >> the situation in central america is not going to get better. >> in el salvador we are seeing

gradual increase in homicide rates up to 90 per 100,000. for this 15 easterned that doesn't want to give her name, the next journey out of honduras can't come soon enough. she was deported by mexican authorities back to san pedro where she's staying with relatives.

>> reporter: this is your mother. very pretty. she has not seen her mother, who lives in the u.s., since she was

three.