Paul Begala: Who decides what statutes say in Congress? The obvious answer is that Congress itself decides

John Avlon : If Senate Republicans don't careful, they will set a new precedent to outsource this power to the left-wing bureaucrats at the Government Accountability Office .

At issue are the Environmental Protection Agency ( EPA ) waivers Joe Biden granted to California under the Clean Air Act .

Avlon says these waivers wreak havoc on the domestic automotive and fossil-fuel industries, limiting consumer choice, hurting workers and upending the Constitution .

Those opposed to CRA resolutions would be able to smother them in the crib with adverse GAO “observations” adjudicated by the parliamentarian.

The parliamentarian will herself be mired in an endless morass of legalese about statutory construction and APA interpretation.

The Whitehouse Rule would set a precedent even Democrats will regret — and perhaps sooner than they think.