President Trump Donald John TrumpBarr criticizes DOJ in speech declaring all agency power 'is invested in the attorney general' Military leaders asked about using heat ray on protesters outside White House: report Powell warns failure to reach COVID-19 deal could 'scar and damage' economy MORE announced that he will deliver a prime-time address to the nation on Tuesday amid a government shutdown over funding for his proposed border wall.

"I am pleased to inform you that I will Address the Nation on the Humanitarian and National Security crisis on our Southern Border," Trump tweeted on Monday.

On Thursday, he will travel to the southern border, the White House announced Monday.

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White House press secretary Sarah Huckabee Sanders said Trump will “meet with those on the frontlines” of what the administration is calling “the national security and humanitarian crisis” at the southwest border.

The government entered a partial shutdown late last month after lawmakers failed to reach a deal to fund the government, due to Trump’s demand for $5 billion in funding for his proposed wall between the U.S. and Mexico.

Democrats have stood by their vow not to provide funding for the wall, and Speaker Nancy Pelosi Nancy PelosiPowell warns failure to reach COVID-19 deal could 'scar and damage' economy Overnight Defense: House to vote on military justice bill spurred by Vanessa Guillén death | Biden courts veterans after Trump's military controversies Intelligence chief says Congress will get some in-person election security briefings MORE (D-Calif.) said she plans to push forward this week with votes on individual spending bills to reopen government agencies.

Trump has threatened to declare a national emergency in order to build the wall without congressional approval, raising questions of legality among lawmakers in both parties.

The president is stepping back from demands for a concrete wall, saying Sunday that he instead wants to build a steel barrier because Democrats “don’t like concrete,” but it is unlikely that change will appease Democrats, who oppose the wall based on morals and effectiveness.