The U.S. Supreme Court swept away this week another obstacle to one of President Donald Trump's most aggressively pursued policies - mass deportation - again showing its willingness to back his hardline approach to immigration.

The court decisions are an abrupt turnaround for a population that entered the country legally and shared detailed information about their whereabouts with the government.

The decision lets the Trump administration halt, for now, a program that lets migrants from Cuba, Haiti, Nicaragua and Venezuela live and work in the U.S. for up to two years.