S. 716 · 114th Congress Seniors' Tax Simplification Act of 2015 StageIn committee SponsorMarco Rubio Introduced2015-03-11 Latest action2015-03-11 · Introduced in Senate Follow Summary Text Subjects Cosponsors (5) Votes (0) Actions Cosponsors (5) Mike Lee Current member Senate UT Republican Thomas Carper Former member Senate DE Democrat Christopher Coons Current member Senate DE Democrat Dean Heller Former member Senate NV Republican Bill Nelson Former member Senate FL Democrat