Asylum seekers must pass an initial screening called a “credible fear” interview, a hurdle that a vast majority clear. Under the new policy, they would fail the test unless they sought asylum in at least one country they traveled through and were denied. They would be placed in fast-track deportation proceedings and flown to their home countries at U.S. expense.

The American Civil Liberties Union lawyer who is representing immigrant advocacy groups in the case, Lee Gelernt, said: “This is just a temporary step, and we’re hopeful we’ll prevail at the end of the day. The lives of thousands of families are at stake.”

Morgan said Trump and his administration are “doing everything that they can” to address what he described as the crisis on the U.S. border with Mexico.

Migrants with valid claims “should be seeking help and asylum from the first country they come in contact with,” Morgan said Thursday on Fox News Channel’s “Fox and Friends.” ″They shouldn’t be paying the cartels thousands of dollars and risking their lives to take a 1,000-mile journey across several countries to get help. We want them to get help and seek asylum in the first country they get to.”

Justice Department spokesperson Alexei Woltornist said the agency was “pleased that the Supreme Court intervened in this case,” adding, “This action will assist the Administration in its objectives to bring order to the crisis at the southern border, close loopholes in our immigration system, and discourage frivolous claims.”