II 115th CONGRESS 2d Session S. 2448 IN THE SENATE OF THE UNITED STATES February 15, 2018 Mr. Kennedy (for himself, Mr. Carper , Mr. Cassidy , Mr. Coons , Ms. Collins , and Mr. Merkley ) introduced the following bill; which was read twice and referred to the Committee on Environment and Public Works A BILL To provide for the issuance of a rule to advance next-generation technologies to provide alternatives to hy­dro­fluo­ro­car­bons, and for other purposes.