President Donald Trump appears likely to pull the plug on DACA, the Obama-era program allowing young people who came to the U.S. illegally as children to remain here, several government officials said Friday.

Administration officials said the Department of Homeland Security sent a recommendation to the White House earlier this week on what to do, and Attorney General Jeff Sessions discussed the program with senior officials Thursday at the White House. Sessions has been a consistent opponent of the program, formally known as Deferred Action for Childhood Arrivals.

As many as 1 million immigrants could be affected.

Trump is said to be weighing whether to let DACA gradually expire or end it immediately, but the officials said it is not yet clear which option Trump may choose.