H.R. 5558 · 113th Congress ACO Improvement Act of 2014 StageIn committee SponsorDiane Black Introduced2014-09-18 Latest action2014-09-19 · Referred to the Subcommittee on Health. Follow Summary Text Subjects Cosponsors (1) Votes (0) Actions Cosponsors (1) Peter Welch Current member Senate VT Democrat