The IRS is pushing anew for $80 billion in funding to more than double its workforce and crack down on tax cheats, an initiative that has stalled because of opposition from Republicans citing the potential for abuse by the agency.

Natasha Sarin, the Treasury Department’s counselor for tax policy, said in a release that Tax Day, which falls on Monday, represents an “inflection point” and that the IRS has been grappling with the “most challenging” tax filing season in recent history.