Dramatic video showed the alleged gang members being processed as they arrived at El Salvador's Terrorism Confinement Center

President Donald Trump thanked El Salvador on Sunday after the country's president shared dramatic video of hundreds of alleged migrant criminals landing in Central America after being deported from the U.S.

Trump, who recently invoked the Alien Enemies Act of 1798, which allows the deportation of natives and citizens of an enemy nation without a hearing, thanked Nayib Bukele on social media.

"Thank you to El Salvador and, in particular, President Bukele, for your understanding of this horrible situation, which was allowed to happen to the United States because of incompetent Democrat leadership," Trump wrote. "We will not forget!"