S. 128 · 114th Congress Energy Efficiency Improvement Act of 2015 StageIn committee SponsorRob Portman Introduced2015-01-08 Latest action2015-01-08 · Introduced in Senate Follow Summary Text Subjects Cosponsors (6) Votes (0) Actions Cosponsors (6) Kelly Ayotte Former member Senate NH Republican Michael Bennet Current member Senate CO Democrat Susan Collins Current member Senate ME Republican Al Franken Former member Senate MN Democrat John Hoeven Current member Senate ND Republican Jeanne Shaheen Current member Senate NH Democrat