Democratic Sen. Cory Booker of New Jersey began speaking around 7 p.m. on Monday and said he would continue speaking "for as long as I am physically able."
A man, identified as an air traffic controller by government payroll records, was arrested after police were called to the DCA tower because of a fight.
Employees of the massive U.S. Department of Health and Human Services began getting dismissal notices in a major overhaul expected to ultimately lay off up to 10,000 people.
Nearly all employees at the Institute of Museum and Library Services, which supports U.S. museums and libraries, were put on administrative leave Monday, an administration official said.
