An account of some living in Brownsville between the river and the wall. Note this account also describes status of asylum seekers:
The fencing was intended to help keep out drug smugglers and unauthorized migrants. But in some ways it has complicated the Trump administration’s attempts to halt the waves of migrant families from Central America who have been crossing the border recently. Those who cross in the Rio Grande Valley do not have to breach a border wall to claim asylum, because they reach U.S. soil and gain that right as soon as they have crossed the river. So for them, the situation is no different than it would be if there were no wall or fence at all.