Trump is more of the symptom.... the reality is that we have a political system where it's better to have the issue fester as a means to gin up anger versus actually doing anything to fix the issue. That would require governing, which it is clear that the people running the House GOP have no interest in doing. Especially in an election year with a Democratic President.
I would add that, if Trump were to win and the GOP won both parts of the Legislature, they could take even take this bill and make changes to it that would make it, in their eyes, even better. But again, they are so blinded by politics that they either cannot see it or just don't care about the issue as much as they say.