WASHINGTON — House Democrats plan to file a resolution as soon as Friday that’s aimed at blocking President Trump’s declaration of an emergency at the Southwest border.

That could set up a vote by the full House by mid-March. The clash is over a declaration that Trump is using to try spending billions of dollars beyond what Congress has authorized to start building border barriers.

Passage by the Democratic-run House seems likely. The measure would then move to the Republican-controlled Senate, where there may be enough GOP defections for approval.