Even forcing a vote, win or lose, is very useful.
I want votes on the records of Democrats in defense of the IRS...
The voters aren't going to like that very much when they learn of it.
EV, the vast majority of the American public hasn't got a clue that this debate is even ongoing. They are accustomed to the income tax, probably have little, if any knowledge of its history, and think their "refund" is a government savings system. There has to be a lot of groundwork laid with the American public to prepare them for a possible repeal, as well as for what would replace it.
If this ever happens at all, we are many years away from it.
IMO a goodly portion of the Demo base doesn't pay any income tax, therefore they won't give a damn.