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| Tammy Baldwin | Sponsor |
| Amy Klobuchar | Co-sponsor |
| Bernard Sanders | Co-sponsor |
| Chris Van Hollen | Co-sponsor |
| Elizabeth Warren | Co-sponsor |
| Jeff Merkley | Co-sponsor |
| Maria Cantwell | Co-sponsor |
| Mazie Hirono | Co-sponsor |
| Patty Murray | Co-sponsor |
| Richard Blumenthal | Co-sponsor |
| Ron Wyden | Co-sponsor |
| Tammy Duckworth | Co-sponsor |
| Timothy Kaine | Co-sponsor |