On Tuesday, Lee sponsored the Article ONE Act, which would limit the president’s authority to declare for only 30 days unless Congress voted to extend the emergency. Fourteen Republican senators backed the bill on Tuesday, which includes Sens. Chuck Grassley (R-IA), Thom Tillis (R-NC), Joni Ernst (R-IA), Pat Toomey (R-PA), Ron Johnson (R-WI), Jim Moran (R-KS), Lamar Alexander (R-TN), Ben Sasse (R-NE), Roy Blunt (R-MO), Rob Portman (R-OH), Todd Young (R-IN), Mitt Romney (R-UT), Ted Cruz (R-TX), and Roger Wicker (R-MS).
However, after the White House announced that they will back the Article ONE Act, Lee joined four other Republican senators to vote in favor of ending the national emergency. Sens. Rand Paul (R-KY), Lisa Murkowski (R-AK), Thom Tillis (R-NC), and Susan Collins (R-ME) have signaled that they will vote to end the national emergency to build a wall along the southern border.
Fox News reporter Chad Pergram said that sources told him that as many as 15 Republican senators could join all 47 Senate Democrats to end the national emergency declaration, which puts the Senate close to enough votes to override a presidential veto.
https://www.breitbart.com/politics/2019/03/13/mike-lee-becomes-fifth-gop-senator-to-oppose-trump-national-emergency/