Trump mocks 'discombobulated' Schumer over Democrats' near gaffe on funding ICE

Republicans negotiating on DHS, including Senate Appropriations Chair Susan Collins, R-Maine, and Homeland Security Subcommittee Chair Katie Britt, R-Ala., are meeting Sunday.

"It has to get solved, but the best way again, to solve it is to get Democrats to support funding the entire Department of Homeland Security, you know, not picking and choosing certain aspects of it," he said. "So we'll see where the discussions go today."

Democrats in Congress in February agreed to fund most of the government in exchange for withholding funds from DHS following the fatal shootings of ​two anti-ICE agitators in Minnesota by immigration ​authorities.

The Senate failed to get the 60-vote supermajority needed to advance a Republican proposal to fund the entire DHS earlier in March, after Sen. Bernie Moreno, R-Ohio, objected to an earlier Democratic proposal to separately fund the TSA earlier.

Moreno separately proposed a two-week DHS funding extension, but Democrats blocked that.

Reuters contributed to this report.