Nixon impoundment of clean-water funds (1972–1974)
President Richard Nixon refused to spend billions of dollars Congress had appropriated for wastewater treatment and other programs, claiming the authority to withhold the money. Congress responded by passing the Congressional Budget and Impoundment Control Act of 1974.
Courts ordered some impounded funds released, and Nixon backed down on portions of the clean-water program.
The 1974 law stripped the president of unilateral impoundment power, requiring congressional approval before appropriated funds can be withheld.
The dispute is the same mechanism: an executive cutting money Congress directed to specific programs. The difference here is that the grants were already awarded and obligated, not merely appropriated.
