A painting party.....

Trump sent US troops to the southern border for a 'national emergency.' They're about to spend the next month painting his wall.

Ryan Pickrel

US troops deployed to the southern border amid a national emergency will be spending a month painting President Donald Trump's border wall, an email sent by the Department of Homeland Security to Congress revealed, CBS News first reported.

Senator Dick Durbin, a Democrat from Illinois, confirmed the plans on Twitter Thursday, revealing that "the primary purpose is to improve the aesthetic appearance." He condemned this as a waste of taxpayer dollars, adding, "Our military has more important work to do than making Trump's wall beautiful."

"These are soldiers, they are not painters," Rep. Joaquin Castro, a Texas Democrat, told CBS News.

Active-duty US military were deployed by the thousands to the US-Mexico border starting last October in response to the arrival of migrant caravans from Central America. The president has repeatedly referred to these caravans as invaders, even at times suggesting that the military should use force.

US troops have been constructing barriers and running razor wire, as well as providing support to DHS operations on the border. DHS argues that painting the fence has "operational benefits" beyond pure aesthetics.

Trump reportedly instructed engineers to paint the wall's bollards black to absorb heat and make them difficult to climb.

The federal agency noted that the recently-painted barriers in Tuscon, Arizona had helped Border Patrol beat the "camouflaging tactics of illegal border crossers." DHS also noted that "individuals appeared to have greater difficulty" climbing the newly-painted walls in Nogales, Arizona.

US troops are expected to paint a section of the wall in Calexico, California, and the project is expected to last "approximately 30 days."

President Trump declared a national emergency on February 15 after a showdown with Congress for border funding, arguing that "the current situation at the southern border presents a border security and humanitarian crisis that threatens core national security interests."

There are currently 3,000 active-duy US troops on the southern border serving alongside roughly 2,000 National Guard units.