Long story short: tell your Congressfolk to repeal Iraq War authorization, tax billionaires a lot harder, and pass the PRO Act. Use the tools in the upper right-hand corner of this page (or, if you're on a cellphone, the bottom of this page) to find your Congressfolk's phone numbers and/or use the email/petition tools in the following paragraphs.
Both Win Without War and the Friends Committee on National Legislation help you tell your Congressfolk to repeal the 2002 Authorization to Use Military Force (or AUMF). Yes, it’s still on the books, though the Iraq War has been over for more than a decade and both Presidents Obama and Trump have abused it to launch more unwise and unconstitutional military adventures. No one calls them “wars,” of course, since wars kinda have a bad name now. Why do wars have a bad name now? Why, mainly because of the Iraq War, which the 2002 AUMF authorized, a profoundly evil war George W. Bush and his votaries used to tar all their political opponents as traitors. If you want to stop that from ever happening again, then raise hell about the 2002 AUMF.
Patriotic Millionaires helps you tell your Congressfolk to pass a Billionaire Minimum Income Tax. Billionaires made out a lot better than the rest of us during this pandemic, not because they’re “better people” or because they “worked harder” or because they “contributed more to society,” but because when you start out with billions of dollars, it’s much easier to make billions more, particularly when our civilization acts like “letting the rich do what they want” is not only a good idea but the only idea. A half-century ago we had only one billionaire, and (not coincidentally!) a much fairer America, and the Billionaires Minimum Tax will help us get that America back.
Finally, the Daily Kos Liberation League helps you tell your Senators to pass H.R. 842/S. 420, the Protecting the Right to Organize (or PRO) Act. The PRO Act would outlaw state-level “right to work” laws, which we might better describe as “right to work for less money, fewer benefits, and fewer protections from bosses’ whims” laws, even though I suppose that's not as snappy "Right to work” laws allow workers to work in union shops without paying union dues, but no one who joins a union simply doesn’t know that dues fund the many services a union provides, and not for nothing, but the higher salary workers make when they're in unions tends to outstrip dues. Certainly that's been my experience for a few decades now.