Corporate contractors have been lobbying against a provision of the annual defense spending bill, advancing in Congress this week, that would prohibit the Pentagon from contracting with companies that buy back their own stock if they fail to meet the government’s performance standards.

The U.S. Chamber of Commerce, which is leading the lobbying fight against the bipartisan buyback amendment, issued a July 14 letter demanding that the Senate strike out Section 815 of the National Defense Authorization Act for fiscal 2027.