Acting White House chief of staff Mick Mulvaney refused to say whether or not President Trump would be willing to accept less than his desired $5.7 billion for funding a border wall during an interview on "Fox News Sunday." He told John Roberts, "This is not something where the president's married to a number, he's married to border security."

The big picture: Republicans and Democrats reached an agreement on Friday to end a 35-day partial government shutdown without funding Trump's wall but promised to continue to hold negotiations on border security until government funding lapses again on Feb. 8.