Deep Gulasekaram spoke to Vice News about how the U.S. Border Patrol is turning away asylum seekers at the southern border.

Gulasekaram, the professor of constitutional and immigration law at Santa Clara University School of Law, said it’s not “technically illegal” for border agents to encourage or direct migrants to seek asylum at a port of entry. But it’s incorrect and probably illegal for the agents to tell asylum seekers that adding their names to the list there is the only way to seek asylum — at least until the courts rule in favor of Trump’s proposed policy.