Long story short: tell your Congressfolk to support the Iran nuclear deal, lower gas prices, and pass the MAT Act, the Judiciary Act, and the Truth and Healing Commission on Indian Boarding School Policies 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.
Peace Action helps you tell your House Reps to support re-entry into the Iran nuclear deal. Congressfolk on both sides have shown a disquieting unwillingness to re-enter that deal, and for what? To appease Trumpholes? To "put distance" between them and President Biden? To gain imaginary and irrelevant leverage over Iran's Republican Guard? Gosh, how about doing the right thing for the right reason for once? The Iran nuclear deal was keeping Iran from developing nuclear weapons, but because Donald Trump decided to shit all over anything Barack Obama did that actually helped Americans, he took it away from us. And now Congress wants to make it harder to get it back? Tell them no.
Change.org helps you tell your Congressfolk to "protect Americans and keep gas prices low," because sometimes you gotta be simple and direct. And also sometimes because your Congressfolk are thick-headed because they only talk to each other and Beltway consultants! Recall Katie Porter telling us that her Democratic colleagues didn't talk about inflation because they didn't see anything about it in polling? The stupid is strong with some of our Reps and Senators! Anyway, if you want to deliver a more specific message -- like "pass H.R. 7061/S. 3802, the Big Oil Windfall Profits Tax Act, which would tax excessive oil corporation profits at 95%," you can add that to your signature.
People's Action helps you tell your Congressfolk to pass H.R. 1384/S. 445, the Mainstreaming Addiction Treatment (or MAT) Act. All this locking people up for using and abusing drugs, tell me: has that worked? No, it has not, by the evidence that far too many Americans are still addicted to drugs. The MAT Act would remove certain bureaucratic obstacles to prescribing certain narcotic drugs that treat addiction. "Removing certain bureaucratic obstacles" may be the argument that seems to have attracted a stunning 46 House Republican co-sponsors! But only three in the Senate, meaning the Mitch McConnell Obstruction Machine may yet roll over it. Unless we speak out in numbers they can't deny, of course.
Stand Up America helps you tell your Congressfolk to pass H.R. 2584, the Judiciary Act, which would increase the number of Supreme Court Justices from 9 to 13. I've been saying we need four more Justices to keep up with 13 federal Appeals Courts, but recent events have made the necessity of getting better Justices up there more urgent to me. And I'm sure it's even more urgent for the women and gays and transgender folks who would be directly affected by Sam Alito's made-up "deeply-rooted" doctrine. I'm able to imagine such a thing because I possess the quality of empathy, a quality today's Supreme Court Justices seem to suppress. Surely Joe Biden can find four more Justices who get what it's like to be human.
Finally, the Friends Committee on National Legislation helps you tell your Congressfolk to pass H.R. 5444/S. 2908, the Truth and Healing Commission on Indian Boarding School Policies Act. Federal boarding schools aimed to "civilize" the Native American, but they separated families and abused students, which ain't exactly civilized behavior. Some folks will refer to this bill as an "apology tour" or "cancel culture" or whatnot, but admitting you've done wrong, and then righting that wrong, is about as American as America can be. Note well that the Quakers put out this action alert and the Quakers admit their own past wrongdoing in running more than two dozen boarding schools! That's how you do it.