The
Republican RINO-controlled Congress can abolish IRS by overturning an Obama veto of an abolish IRS bill with 2/3 majority vote of both Houses.
But realistically speaking, so close but still so far.
Many states have an independently elected tax commissioner. There is no reason the same couldn't be done on the federal level with the treasury department accountable to the tax commissioner.
This should be done during non-presidential election years, maybe even by the same electoral vote method.
Yeah, it would be hard to make it a non-partisan office, but it would be a considerable improvement over a hyperpartisan non-accountable IRS.