TOPSHOT - People gather to protest US President Donald Trump during Presidents' Day in Lafayette Square near the White House on February 18, 2019 in Washington, DC. - The event is part of a national mobilization effort with protests to be held throughout the country. US President Trump on February 15, 2019 invoked a "national emergency" to justify tapping military and other funds for barrier construction, after Congress approved less than a fourth the $5.7 billion he had sought for border security. (Photo by Brendan Smialowski / AFP)