II 116th CONGRESS 1st Session S. 946 IN THE SENATE OF THE UNITED STATES March 28, 2019 Mr. Van Hollen (for himself and Mr. Cardin ) introduced the following bill; which was read twice and referred to the Committee on Health, Education, Labor, and Pensions A BILL To direct the Comptroller General of the United States to complete a study on barriers to participation in federally funded cancer clinical trials by populations that have been traditionally underrepresented in such trials.