ROUGH CUT (NO REPORTER NARRATION) The U.S. House of Representatives votes on Tuesday on a resolution to terminate President Donald Trump's declaration of a national emergency to build a wall on the border with Mexico.
House Democrats introduced the resolution last week, challenging Trump's assertion that he could use money to build the wall that Congress had appropriated for other purposes.
The resolution is expected to sail easily through the Democrat-controlled House.
Action then moves to the Republican-majority Senate, where the measure's future is uncertain even though it only requires a simple majority to pass.
Besides being another chapter in a long-running fight between Trump and Democrats over border security and immigration policy, Tuesday's vote will be a test of constitutional separation of powers, as it is the House and Senate that primarily dictate spending priorities, not the president.
2 House Democrat, Representative Steny Hoyer, said at a press conference on Monday that he had traveled to the U.S.-Mexico border twice in the past few weeks.
"What I concluded is there is no crisis at the border.
The issue ... will be whether there is a crisis of our constitutional adherence," Hoyer said.
Republican Senator Thom Tillis, in an op-ed published in Tuesday's Washington Post, said he backed Trump on border security issues but would vote for the resolution because he "cannot justify providing the executive with more ways to bypass Congress." At least two other Republican senators, Susan Collins and Lisa Murkowski, have told the media they are likely to vote for the measure.
For the resolution to pass the Senate, at least one more Republican vote would be needed, assuming all Democrats and two independents back it.
Trump, who declared the national emergency this month after Congress declined his request for $5.7 billion to help build a border wall, vowed last week to veto the measure if it passes both chambers.
Congress would then have to muster the two-thirds majority necessary - a high hurdle - to override the president's veto for the measure to take effect.
A bipartisan group of 58 former national security officials issued a statement Monday saying there was no "factual basis" for Trump's emergency declaration.
Lawmakers must not allow "any president (to) on a whim declare emergencies, simply because he or she can't get their way in the Congress," Senate Democratic Leader Chuck Schumer declared Monday.
Schumer warned that Trump's emergency declaration "could cannibalize funding from worthy projects all over the country," noting that the administration had not even decided yet what projects to take the funds from.
Some 226 House lawmakers are co-sponsoring the bill, including all but a handful of Democrats as well as one Republican, Justin Amash.
The issue is also in the courts.
A coalition of 16 U.S. states led by California has sued Trump and top members of his administration to block his emergency declaration.
Congress this month appropriated $1.37 billion for building border barriers following a battle with Trump, which included a 35-day partial government shutdown - the longest in U.S. history - when agency funding lapsed on Dec.