Lawmakers are split over President Trump's decision to sign a national emergency declaration Friday to get more funds for his long-promised border wall.

"If we give away, surrender the power of the purse, our most important power, there will be little check and no balance left," says Rep. Adam Schiff, (D) California. "It will not be a separation of powers anymore. Just a separation of parties."

"Unfortunately, when it comes to Trump, the Congress is locked down and will not give him what we've given past presidents," says Sen. Lindsey Graham, (R) South Carolina. "So unfortunately, he's got to do it on his own, and I support his decision to go that route."

U.S. Customs and Border Protection apprehended close to 400,000 people on the U.S.-Mexico border during the 2018 fiscal year, according to federal data. That is an increase from 2017, but less than 2016. Many of those people were claiming asylum. 

Democrats in the House are expected to introduce, vote on and pass a resolution that would rescind the national emergency. If they do, the Republican controlled Senate would be forced to vote on it.

The White House is promising that if it passes, the president would issue the first veto of his presidency.