| Group Name | Type | Legislative Body | Session | Party | Role | Joined | Left |
|---|---|---|---|---|---|---|---|
| 119th Senate Democrats | legislative | U.S. Senate | 119th Congress | Democratic | Member | 1/3/2021 | 1/3/2027 |
| 118th Senate Democrats | legislative | U.S. Senate | 118th Congress | Democratic | Member | 1/3/2021 | 1/3/2027 |
| 117th Senate Democrats | legislative | U.S. Senate | 117th Congress | Democratic | Member | 1/3/2021 | 1/3/2027 |
| 116th Senate Democrats | legislative | U.S. Senate | 116th Congress | Democratic | Member | 1/6/2015 | 1/3/2021 |
| 115th Senate Democrats | legislative | U.S. Senate | 115th Congress | Democratic | Member | 1/6/2015 | 1/3/2021 |
| 114th Senate Democrats | legislative | U.S. Senate | 114th Congress | Democratic | Member | 1/6/2015 | 1/3/2021 |
| Date | Event | Source | Relationship | Involvement |
|---|---|---|---|---|
| 8/24/2017 | Interior Secretary Zinke Recommends Reducing Cascade-Siskiyou National Monument | Merkley, Wyden Respond to Trump Administration Assault on Cascade-Siskiyou National Monument | quoted | secondary |