President Donald Trump has chosen to end the Deferred Action for Childhood Arrivals program (DACA) that allows people brought to the U.S. as undocumented children to remain in the country.

Politico.com reported Sunday night that Trump has chosen to end the program but has instituted a six month delay.

“In a nod to reservations held by many lawmakers, the White House plans to delay the enforcement of the president’s decision for six months, giving Congress a window to act, according to one White House official,” said Politico’s Eliana Johnson.

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After vacillating on the issue for months, Trump was reportedly pressed into the decision by Attorney Gen. Jeff Sessions, who argued that immigration policy should be set by the Congress, not the executive branch.

White House aides met on Sunday afternoon to discuss how to roll out the decision, but officials who spoke to Politico “caution that — as with everything in the Trump White House — nothing is set in stone until an official announcement has been made.”

Trump will announce the decision on Tuesday. The White House informed Speaker of the House Paul Ryan — who spoke out against striking down DACA — on Sunday morning.