WASHINGTON (AP) — Democrats controlling the House have teed up a vote next week to block President Donald Trump from using a national emergency declaration to fund a wall along the U.S.-Mexico border, accelerating a showdown in Congress that could divide Republicans and lead to Trump's first veto.

The Democrats introduced a resolution Friday to block Trump's declaration, and House Speaker Nancy Pelosi said the House would vote on the measure Tuesday. It is sure to pass, and the GOP-run Senate may adopt it as well. Trump quickly promised a veto.

"Will I veto it? 100 percent," Trump told reporte...