many families are choosing to leave their homes in central america for the unknown, a life in the u.s. some are facing life-or-death situations and are risking everything to come here. cnn's nick valencia went to the border to meet families trying to seek asylum. >> reporter: through the tree brush, border patrol agent robert rodriguez spot what is he says are three smugglers preparing to launch a raft filled with migrants. he says they're filming us. along with agent rodriguez, we follow the raft downstream. it's there we see this, six central american migrants, some of those who are on the raft, one of them traveling with his father is just 3 years old. >> what are you looking for