President Trump said Tuesday that he would revisit his decision to end the Deferred Action for Childhood Arrivals (DACA) program if lawmakers are unable to pass legislation on the matter in the next six months.

"Congress now has 6 months to legalize DACA (something the Obama Administration was unable to do). If they can't, I will revisit this issue!" he wrote on Twitter.

Congress now has 6 months to legalize DACA (something the Obama Administration was unable to do). If they can't, I will revisit this issue! — Donald J. Trump (@realDonaldTrump) September 6, 2017

Attorney General Jeff Sessions Jefferson (Jeff) Beauregard SessionsTrump's policies on refugees are as simple as ABCs Ocasio-Cortez, Velázquez call for convention to decide Puerto Rico status White House officials voted by show of hands on 2018 family separations: report MORE announced Tuesday morning that the Trump administration would rescind the Obama-era program, which shielded certain young undocumented immigrants from deportation.

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The administration said, however, that DACA would be phased out over the next six months, a delay intended to give lawmakers time to pass legislation addressing the issue.

Trump defended the decision to rescind the program earlier Tuesday, saying that the six-month delay would give lawmakers "a window" to act.

"As I’ve said before, we will resolve the DACA issue with heart and compassion — but through the lawful democratic process,” he said.

Several lawmakers on both sides of the aisle have already expressed support for the DREAM Act, which would grant young immigrants who were brought to the U.S. illegally as children reprieve from deportation. The DREAM Act was first introduced in 2001.