S. 1309 · 117th Congress HEAT Act StageIn committee SponsorSusan Collins Introduced2021-04-22 Latest action2021-04-22 · Introduced in Senate Follow Summary Text Subjects Cosponsors (4) Votes (0) Actions Cosponsors (4) Lisa Murkowski Current member Senate AK Republican Benjamin Cardin Former member Senate MD Democrat Roger Marshall Current member Senate KS Republican Jeanne Shaheen Current member Senate NH Democrat