Kentucky Senator Rand Paul has indicated he would vote in favor of a measure blocking Trump’s emergency declaration, which seeks to divert billions of federal dollars to build a wall on the U.S.-Mexico border. Last week, Republican Senators Susan Collins, Lisa Murkowski and Thom Tillis said they will join their Democratic colleagues to vote in favor of the bill. Paul’s vote would provide the Senate with the one-vote majority needed in order to pass the resolution. Lawmakers in the House passed a resolution last week blocking Trump’s national emergency; however, neither the House nor the Senate have enough votes to override a presidential veto, which Trump has vowed to use.