II 115th CONGRESS 2d Session S. 2301 IN THE SENATE OF THE UNITED STATES January 11, 2018 Ms. Warren (for herself, Mr. Brown , Mr. Blumenthal , Ms. Baldwin , Ms. Smith , Mr. Markey , Mr. Booker , Mr. Murphy , Mr. Sanders , Ms. Stabenow , Mr. Kaine , Ms. Harris , and Ms. Hassan ) introduced the following bill; which was read twice and referred to the Committee on Health, Education, Labor, and Pensions A BILL To strengthen parity in mental health and substance use disorder benefits.