If you haven't already, take a moment tonight to write to senators and representatives and tell them why it is so important that we pass this.
Remember, it isn't only transpeople this bill helps. As an ally, I feel that the most important reason to support this bill is to make it illegal to deny housing, employment, and other basic rights to people just because they're transgender, but for those who need to be convinced further, remember that this bill really helps everyone. This bill will make it clear that it's discriminatory to require an female employee to dress "more femininely," for instance. Not to mention just the sheer fact that the world becomes a better place any time we eliminate yet another aspect of us/them-ing. Go write e-mails!