President Trump and Attorney General Jeff Sessions both spent Tuesday morning targeting the street gang MS-13.

The president signed an executive order shortly after getting into office which called for the Department of Justice to convene a task force to go after transnational criminal organizations such MS 13. MS 13, whose formal name is Mara Salvatrucha, is primarily run out of El Salvador and started in the 1990s after a wave of deportations from the United States.

Trump, however, blamed open border policies by former President Barack Obama for the spread of the gang in the U.S. “The weak illegal immigration policies of the Obama Admin. allowed bad MS 13 gangs to form in cities across U.S. We are removing them fast!,” Trump tweeted.

Sessions echoed these comments in his opening remarks before a meeting of the Attorney General’s organized crime council.