U.S. senators are discussing a proposal to end the Homeland Security budget stalemate by funding much of the department, including Transportation Security Administration airport workers who are going without pay. The deal would exclude Immigration and Customs Enforcement's operations, which have been core to the dispute. As U.S. airports remain jammed with long lines due to short staffing at TSA, President Donald Trump ordered Immigration and Customs Enforcement officers to provide airport security, alarming some lawmakers. At least 458 TSA officers have quit altogether, according to DHS. DHS is now being overseen by Markwayne Mullin, whose nomination was approved by the Senate on Monday.