Congress and Senate are fully aware of the difference between the issues in the eyes of the public, their reelection (retired on the job position) is at risk with tax issues, and they are very risk adverse. Coupled with that is the threat of losing their personal funding from the lobbyists with any changes detrimental to their sponsors.

It would be very interesting to know if the current POTUS hasn't been the one to maneuver them into this no-win position. Members of Congress and the Senate are already taking FIRM negative positions on the current legislation's development, which may be popular with their constituents...for now, but will it be by the November 2018 mid-terms..