S. 448 · 113th Congress Seniors' Tax Simplification Act of 2013 StageIn committee SponsorMarco Rubio Introduced2013-03-05 Latest action2013-03-05 · Introduced in Senate Follow Summary Text Subjects Cosponsors (6) Votes (0) Actions Cosponsors (6) Kay Hagan Former member Senate NC Democrat Christopher Coons Current member Senate DE Democrat Dean Heller Former member Senate NV Republican Thomas Carper Former member Senate DE Democrat Mike Lee Current member Senate UT Republican Bill Nelson Former member Senate FL Democrat