Supporters of the Taliban and al-Qaeda in Afghanistan have been getting U.S. military contracts, and American officials are citing “due process rights” as a reason not to cancel the agreements, according to an independent agency monitoring spending.

The U.S. Army Suspension and Debarment Office has declined to act in 43 such cases, John Sopko, the Special Inspector General for Afghanistan Reconstruction, said today in a letter accompanying a quarterly report to Congress.