The US Congress braced for an unprecedented effort to overturn a presidential emergency declaration, as Republicans worked to limit defections on the eve of a critical House vote while Democrats framed the issue as a constitutional showdown.
Partisans on both sides unleashed sharp new rhetoric ahead of tomorrow's vote on a Democratic-authored resolution that would nullify President Donald Trump's declaration of a national emergency at the US-Mexico border.
Congress has never before sought to cancel a national emergency declared by the president since passage of the National Emergencies Act in 1976.
The resolution is expected to pass the House easily with unified Democratic support. But GOP leaders were urging their members to oppose it, aiming to keep the final tally low enough to demonstrate that Congress would be unable to overturn the veto that Trump has threatened.
While Democrats tried to focus on the constitutional issues at stake in Trump using an emergency declaration to get border-wall money denied by Congress, Republicans trained their arguments on what they called dire conditions along the border that necessitated Trump's move.