The bill passed despite two attempts, from Brochin and Minority Whip Stephen Hershey, to delay a vote to a later date. Senate President Thomas V. Mike Miller rejected both.

“This is the most childish bill that I’ve ever seen and I’m embarrassed that it’s on the floor,” Hershey said.

Sen. Paul Pinsky, a Prince George’s County Democrat, rejected criticisms from colleagues that, if passed, the law would not stand up to legal challenge. He said an assistant attorney general advised that it was “not clearly unconstitutional.”

“She equivocated, OK? This has not been tested in the courts,” he said.