While Republicans fail over and over on health care, they're also actively trying to write trans people out of civil rights legislation for NO REASON other than them being fucking transphobes and generally horrible people happy to leap from one bigotry to another as long as the public will tolerate it.
The act is very explicit about what it intends to do. It wants to forbid the federal government from interpreting any protections against gender discrimination as also applying to trans folks. It wants to retroactively redefine inclusive civil rights protections as being non-inclusive.
The bill reads: “The purposes of this Act are— (1) to prevent the executive branch from unilaterally rewriting Federal civil rights laws by enacting or implementing any policy or undertaking any enforcement action that is based on construing the term ‘sex’ or ‘gender’ to mean ‘gender identity’; and (2) to ensure that gender identity is not treated as a protected class in Federal law or policy without the affirmative approval of the people’s representatives in Congress.”
I think it would actually be better to define trans issues separately from gender issues since they have their own unique problems that cis women like myself don't experience, but that is not the purpose of this bill. They just want to be able to create bathroom bills that keep trans people out of public life, including school. It's also yet another middle finger to former President Obama, because they never tire of that.
And of course, actually passing protections explicitly for trans people in the current Republican-controlled congress would be fucking impossible, but it would likely still be very difficult if it were entirely controlled by Democrats. So the language forbidding trans people from being covered under gender protections screws them over for years and sets them up to have to endure a long and dehumanizing fight just to get the basic recognition of "yeah people hate us so much we need the government to intervene."
It's also going to be very difficult to get enough people to care about this bill to call their representatives about it. This has a very real chance of passing. If you care at all about trans people, please call. Even if you think your representative is very liberal. There's still a lot of transphobia among Democrats.