II 115th CONGRESS 1st Session S. 670 IN THE SENATE OF THE UNITED STATES March 21, 2017 Ms. Warren (for herself, Mr. Grassley , Ms. Hassan , and Mr. Isakson ) introduced the following bill; which was read twice and referred to the Committee on Health, Education, Labor, and Pensions A BILL To provide for the regulation of over-the-counter hearing aids.