II 115th CONGRESS 1st Session S. 852 IN THE SENATE OF THE UNITED STATES April 5 (legislative day, April 4), 2017 Mr. Cardin (for himself and Mr. Portman ) introduced the following bill; which was read twice and referred to the Committee on Finance A BILL To amend the Internal Revenue Code of 1986 to protect older, longer service and grandfathered participants in defined benefit plans.