Because the IRS wasn’t underfunded and overburdened enough. I personally find it unfair that Congress keeps increasing the IRS’s responsibilities, forcing them to oversee programs that were never part of the deal in the past, but decreases their budget every year. Who suffers? Accountants and taxpayers dealing with overworked and undertrained IRS staffers.
I quite agree, although the IRS is not the only government service that has seen this travesty.