Should the 47 Senators have written the Iranian leaders? I read the letter in full after my post and am disappointed with it, to be honest. My 5-year old daughter could have written a better letter.
A better way to address the situation would have been passing a Concurrent or Simple Resolution.
The letter is really bad, as in just condescending and dumb. I'm sure the Iranian leaders are well versed in the US Constitution, perhaps moreso than even our current President, who continually seeks ways to cut Congress out of its privileges and duties.
The most annoying part is now you have Biden the blowhard out there pontificating along with other Democrats on how that kind of thing has never been done, when (in fact) the Democrats have interferred with a Republican President who was in the middle of negotiations as well.
Go back in time to 2007, when W was President and Nancy Pelosi was the House Speaker. W was trying to isolate Syrian President Assad and sanction him for supplying arms to insurgents in Iraq. Against the wishes of the State Dept and White House, Pelosi and other Democrats flew to Damascus to meet in person with Assad.
This is all politics. Biden and the other Democrats need to shut up, because their party leader and others much worse. Honestly, meeting in person is much worse than simply writing an open letter which wasn't even mailed to Iran.
Again, the best course of action would have been passing a Concurrent or Simple Resolution, not publishing this badly written letter.
But I don't want to hear the Democrats

about this. They've done it themselves.
It's all politics, only the roles are reversed.