Democrat Tim Kaine of Virginia is the most recent one. And Republicans Crapo and Young, from Idaho and Indiana respectively, are two others from April.

Sources:
https://www.bnnbloomberg.ca/senate-democrat-urges-biden-to-repeal-tariffs-to-fight-inflation-1.1787314

https://www.breitbart.com/politics/2022/04/26/senate-republicans-working-to-help-biden-further-cut-u-s-tariffs-on-china/

Edit: a more complete list of senators for/against.
https://prosperousamerica.org/senators_china_tradewar_tariffs_pat_toomey_mike_crapo_jacky_rosen/

Ask yourself which politician namely Democratic has died from this deadly killer disease we were all told to run from.

Such corruption in Congress. I don’t know if simply removing those corrupt from office can clean it up. Defund/disband Congress is needed, along with a total revamp and laws to prevent profiting. Provide a better wage to be able to afford high rental/real estate prices in Virginia and D.C., regular health care plan with an option for a Congress to pay out of pocket for an upgrade, and security as needed. With that in mind: ban insider trading by Congress, staff and immediate family; review all financials every 1-2 years; refuse lobbyists from influence peddling and bribing; no Congressional member, staff or family member may hold a job for 10 years after laws are reviewed and enacted which effect said company.

Hanging traitors os still a thing. I'm not gonna complain.