II 116th CONGRESS 1st Session S. 1943 IN THE SENATE OF THE UNITED STATES June 24, 2019 Mr. Menendez (for himself, Mrs. Feinstein , Mr. Blumenthal , and Mr. Kaine ) introduced the following bill; which was read twice and referred to the Committee on the Judiciary A BILL To regulate firearm silencers and firearm mufflers.