WASHINGTON — Senate lawmakers are expected Tuesday to grill the acting director of the Secret Service about law enforcement lapses in the hours before the attempted assassination of former U.S. president Donald Trump in the latest in a series of congressional hearings dedicated to the shooting.

Ronald Rowe became acting director of the agency last week after Kimberly Cheatle resigned in the aftermath of a House hearing in which she was berated by lawmakers and failed to answer specific questions about the communication failures preceding the July 13 shooting.