President Trump said Tuesday he's about to hand Congress the responsibility for figuring out what to do with illegal immigrants who were brought to the U.S. as children.

"Congress, get ready to do your job - DACA!" Trump tweeted Tuesday morning.

That's a reference to President Obama's Deferred Action on Childhood Arrivals program, which Trump is reportedly ready to scrap. Attorney General Jeff Sessions is expected to announce in a few hours that the program will end after six months, which will give Congress time to find a legislative way of handling the roughly 800,000 illegal immigrants who are now protected from deportation and are allowed to work under the program.

Trump was under pressure to decide the fate of DACA after 10 state attorneys general had threatened a lawsuit if he did not rescind the program by Tuesday.