The Senate State Affairs Committee introduced a bill on Friday that would exempt the state from Boise planning rules and regulations for projects on Capitol mall grounds.
Last year, lawmakers approved a multi-story, 580-stall parking facility to help ease the state government parking squeeze.
But in January, a city review committee rejected a portion of the design plans a decision later upheld by the city's Planning and Zoning Commission. State officials are appealing to the city council.
If the appeal fails, Boise Republican Sen. Chuck Winder says his bill allows the state to proceed with construction without city approval.
The committee will debate the bill next week.