II 116th CONGRESS 1st Session S. 1831 IN THE SENATE OF THE UNITED STATES June 13, 2019 Mr. Markey (for himself, Mr. Menendez , Mr. Brown , Mr. Murphy , Ms. Hirono , Mr. Blumenthal , Ms. Harris , Mr. Van Hollen , Mrs. Feinstein , Ms. Duckworth , Mr. Sanders , Mr. Durbin , Mr. Reed , Mr. Merkley , Mrs. Murray , Ms. Baldwin , Mr. Leahy , Ms. Smith , Ms. Klobuchar , Mr. Kaine , Mr. Wyden , Mr. Cardin , Mr. Coons , Mr. Schatz , Mr. Booker , Mr. Casey , and Ms. Rosen ) introduced the following bill; which was read twice and referred to the Committee on the Judiciary A BILL To amend chapter 44 of title 18, United States Code, to prohibit the distribution of 3D printer plans for the printing of firearms, and for other purposes.