By a 6-3 vote, the high court ruled that federal law allows the government to stop asylum seekers from physically setting foot in the United States, effectively keeping them from applying for asylum.

Writing for the court majority, Justice Samuel Alito that under the TPS law, the president has unreviewable authority to end the program, without intervention from the courts.

The central issue in the Roundup case, filed by Missouri resident John Durnell, was who decides what should appear on a pesticide or insecticide label—and whether a federal law overrides state claims.