The U.S. Senate is adjourning until next week without a deal to end the partial government shutdown that began at midnight Friday, the Senate said Saturday.

"#Senate has adjourned for the day and will meet in a pro forma session on Monday, December 24th and will return on Thursday, December 27th at 4:00 p.m. and consider business if a deal has been reached on government funding," the Senate said on Twitter Saturday afternoon.

A pro forma session, which typically only lasts a few minutes, doesn't involve votes, but senators are able to clear legislation by unanimous consent.

The U.S. House and Senate convened Saturday noon on Capitol Hill, but didn't break the deadlock over the proposed 5-billion-U.S.-dollar U.S.-Mexico border wall, a centerpiece of President Donald Trump's 2016 campaign.