II 116th CONGRESS 1st Session S. 1636 IN THE SENATE OF THE UNITED STATES May 23 (legislative day, May 22), 2019 Mr. Roberts (for himself, Ms. Smith , and Mr. Cassidy ) introduced the following bill; which was read twice and referred to the Committee on Health, Education, Labor, and Pensions A BILL To amend the Federal Food, Drug, and Cosmetic Act with respect to the scope of new chemical exclusivity.