Sens. Lisa Murkowski (R-Ala.), Susan Collins (R-Maine), and Cory Gardner (R-Colo.) have called for the government to be reopened before more work is done on border security.

Why it matters: It's getting harder for lawmakers to ignore the real consequences of a shutdown. Democrats in the House have passed a spending bill that would fund a majority of the shuttered government agencies besides the Department of Homeland Security, but President Trump has promised a veto. The Senate can override a veto with 67 votes, but Majority Leader Mitch McConnell has said he won't bring any vote that doesn't have Trump's approval.

Murkowski: "We don't need to hold up these six other departments at the same time that we are resolving these very important security issues."

"We don't need to hold up these six other departments at the same time that we are resolving these very important security issues." Collins: "I'm not saying their whole plan is a valid plan, but I see no reason why the bills that are ready to go and on which we've achieved an agreement should be held hostage to this debate over border security."

"I'm not saying their whole plan is a valid plan, but I see no reason why the bills that are ready to go and on which we've achieved an agreement should be held hostage to this debate over border security." Gardner: "I think we should pass a continuing resolution to get the government back open. The Senate has done it last Congress, we should do it again today."

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