It’s a big win for the Trump administration as the Supreme Court allows Trump to partly enforce his controversial ban. Elizabeth Keatinge (@elizkeatinge) has more.

WASHINGTON — The Supreme Court agreed Monday to let President Trump’s immigration travel ban go into effect for some travelers, reversing the actions of lower federal courts that had put the controversial policy completely on hold.

The court also agreed to hear the case involving travelers from six predominantly Muslim countries and all refugees in the early fall, leaving open the chance that it could reverse Monday’s verdict if challengers can prove the ban is illegal or unconstitutional.

The justices’ action gives Trump a partial victory following a string of defeats from coast to coast, and he wasted no time applauding it.

“Today’s unanimous Supreme Court decision is a clear victory for our national security,” Trump said in a statement. “It allows the travel suspension for the six terror-prone countries and the refugee suspension to become largely effective.”

That was immediately contested by immigrant rights and civil liberties groups challenging the travel ban, who argued that most would-be travelers cannot be barred under the court’s compromise ruling. “The hope is that this really only impacts a very small number of people,” said Becca Heller, director of the International Refugee Assistance Project.

Of the more than 100,000 people who legally entered the U.S. from the six countries last year, most would have qualified to enter under the Supreme Court’s criteria, according to State Department data. Nearly 30,000 had immigrant visas, and more than 25,000 arrived as refugees matched up with non-profit groups or sponsor families.

Going forward, however, both those categories of travelers may have to prove their connection…