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- President Donald Trump speaks during an event in the Rose Garden at the White House to declare a national emergency in order to build a wall along the southern border, Friday, Feb. 15, 2019, in Washington. (AP Photo/ Evan Vucci)
- President Donald Trump turns back to the audience after speaking during an event in the Rose Garden at the White House in Washington, Friday, Feb. 15, 2019, to declare a national emergency in order to build a wall along the southern border. (AP Photo/Susan Walsh)
- U.S. House Speaker Nancy Pelosi, a Democrat from California, speaks during an enrollment ceremony on Capitol Hill in Washington, D.C., U.S., on Feb. 14, 2019. Congress sent President Donald Trump legislation he said he'll sign to avoid another government shutdown, as a new dispute looms over his decision to declare a national emergency to get a total of $8 billion in federal money for his border wall, according to an official. Photographer: Zach Gibson/Bloomberg via Getty Images
- A Border Patrol unit drives near a section of reinforced US-Mexico border fence seen from Tijuana, Baja California state, Mexico, on February 14, 2019. - US President Donald Trump will sign a spending bill to avert a government shutdown but will also issue an emergency declaration to fund his controversial border wall, the White House and lawmakers said Thursday. (Photo by Guillermo Arias / AFP) (Photo credit should read GUILLERMO ARIAS/AFP/Getty Images)
- President Donald Trump speaks during an event in the Rose Garden at the White House in Washington, Friday, Feb. 15, 2019, to declare a national emergency in order to build a wall along the southern border. (AP Photo/Susan Walsh)
- President Donald Trump speaks during an event in the Rose Garden at the White House to declare a national emergency in order to build a wall along the southern border, Friday, Feb. 15, 2019, in Washington. (AP Photo/ Evan Vucci)
- President Donald Trump speaks during an event in the Rose Garden at the White House to declare a national emergency in order to build a wall along the southern border, Friday, Feb. 15, 2019, in Washington. (AP Photo/ Evan Vucci)
- President Donald Trump speaks during an event in the Rose Garden at the White House to declare a national emergency in order to build a wall along the southern border, Friday, Feb. 15, 2019, in Washington. (AP Photo/ Evan Vucci)
- President Donald Trump speaks during an event in the Rose Garden at the White House to declare a national emergency in order to build a wall along the southern border, Friday, Feb. 15, 2019, in Washington. (AP Photo/ Evan Vucci)
- President Donald Trump, left, looks over to Susan Stevens, right, who is holding up a picture of her daughter, during an event in the Rose Garden at the White House to declare a national emergency in order to build a wall along the southern border, Friday, Feb. 15, 2019 in Washington. Stevens lost her daughter to opioids. (AP Photo/Pablo Martinez Monsivais)
- President Donald Trump speaks during an event in the Rose Garden at the White House Friday, Feb. 15, 2019 in Washington. (AP Photo/Pablo Martinez Monsivais)
- US President Donald Trump speaks about a state of emergency from the Rose Garden of the White House February 15, 2019 in Washington, DC. - President Donald Trump, repeating his claim that 'walls work,' announced that he will declare a national emergency in order to build a barrier on the US-Mexico border without funding from Congress. (Photo by Brendan Smialowski / AFP) (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
- WASHINGTON, DC - FEBRUARY 15: CNN's Jim Acosta (R) talks with 'Angel moms,' including Sabine Durden (L), following a news conference with U.S. President Donald Trump in the Rose Garden at the White House February 15, 2019 in Washington, DC. Trump said he would declare a national emergency to free up federal funding to build a wall along the southern border. (Photo by Chip Somodevilla/Getty Images)
- A Central American migrant walks along the Rio Grande (also Rio Bravo), the river on US-Mexico border that divides the cities of Piedras Negras in Mexico's Coahuila State and Eagle Pass in Texas, US, on February 15, 2019. - President Donald Trump, repeating his claim that 'walls work,' announced Friday that he will declare a national emergency in order to build a barrier on the US-Mexico border without funding from Congress. (Photo by Julio Cesar AGUILAR / AFP) (Photo credit should read JULIO CESAR AGUILAR/AFP/Getty Images)
- Central American migrants observe the Rio Grande (also Rio Bravo), the river along the US-Mexico border that divides the cities of Piedras Negras in Mexico's Coahuila State and Eagle Pass in Texas, US, on February 15, 2019. - President Donald Trump, repeating his claim that 'walls work,' announced Friday that he will declare a national emergency in order to build a barrier on the US-Mexico border without funding from Congress. (Photo by Julio Cesar AGUILAR / AFP) (Photo credit should read JULIO CESAR AGUILAR/AFP/Getty Images)
- WASHINGTON, Feb. 14, 2019 -- U.S. House Speaker Nancy Pelosi speaks during a press conference on Capitol Hill in Washington D.C., the United States, on Feb. 14, 2019. U.S. President Donald Trump is prepared to sign a bipartisan bill on spending and border security to avert another government shutdown, but also declare a national emergency to obtain funds for his long-promised border wall, the White House said Thursday. Nancy Pelosi, the top Democrat in the House, said her party is 'reviewing our options' in responding to the anticipated emergency declaration. (Xinhua/Ting Shen) (Xinhua/Ting Shen via Getty Images)
- A Border Patrol unit remains near a section of reinforced US-Mexico border fence seen from Tijuana, Baja California state, Mexico, on February 14, 2019. - US President Donald Trump will sign a spending bill to avert a government shutdown but will also issue an emergency declaration to fund his controversial border wall, the White House and lawmakers said Thursday. (Photo by Guillermo Arias / AFP) (Photo credit should read GUILLERMO ARIAS/AFP/Getty Images)
- A section of the reinforced US-Mexico border fence is seen from Tijuana, Baja California state, Mexico, on February 14, 2019. - US President Donald Trump will sign a spending bill to avert a government shutdown but will also issue an emergency declaration to fund his controversial border wall, the White House and lawmakers said Thursday. (Photo by Guillermo Arias / AFP) (Photo credit should read GUILLERMO ARIAS/AFP/Getty Images)