Taxpayers have rights? Wow! Who knew???
TIGTA is the internal organization that audits and monitors the IRS. Be happy they’re there.
That said, any reduction in the size or complexity of the IRS has to the start with the tax code. A half page form with a flat tax could collect the same revenue in a more even (IHMO “fair”) manner and kickstart the elimination of 95% of the IRS in a few years.