Pass a law that requires all federal agency budgets to be reduced by the same amount when it is found, by an independent, credible source to have wasted, mismanaged, misappropriated or is unable to account for money.
(Example, The Special Inspector General for Afghan Reconstruction (SIGAR) issued a scathing report showing the Department of State gave a staggering 87 percent of all Afghan reconstruction funds to only five recipients.
In fact, 69 percent of all taxpayer money spent went to just one contractor.