Sara Dorn is a Forbes news reporter who covers politics.Jul 17, 2026, 12:59pm EDTToplineDepartment of Homeland Security Secretary Markwayne Mullin said Immigration and Customs Enforcement is ramping up street-level enforcement, despite intense backlash to two killings by ICE officers in less than a week in Maine and Texas.Secretary of Homeland Security Markwayne Mullin speaks during a news conference in the Eisenhower Executive Office Building on July 17, 2026 in Washington, DC. (Photo by Anna Moneymaker/Getty Images)Getty ImagesKey FactsMullin said “we’re turning up the heat on the streets” during a press conference Friday when asked by a reporter how agents who violated use of force policy would be held accountable. This is a developing story and will be updated.LOADING VIDEO PLAYER...FORBES’ FEATURED Video