@cwebber I think people underestimate the influence that constituents contacting their members of Congress can have. It's unlikely to change the votes of Republicans, but it could influence what Democrats see as politically expedient.

Politicians expect that each constituent who contacts them represents a larger number of constituents who couldn't be bothered to contact them but will still vote. The more trouble someone takes to communicate, the more people they're seen to represent. A call represents more people than a boilerplate email. A physical letter represents even more people, and an in-person visitor represents many people. Conservative activists understand this dynamic well; it's one of the tools they use to hold onto minority rule.

Organizing group visits to congressional offices (whether in the states or in DC) could be an effective tactic to put pressure on Democratic politicians who are soft on trans rights. Enough constituents show up in person to a politician's office, and they start to look like a threat to their job that can't be ignored.