The recently passed U.S. defense authorization bill aims to prevent Turkey from following through with plans to integrate a Chinese-built missile defense system into a NATO architecture that includes U.S. interceptors.

In September, Turkish government leaders chose a Chinese company, China Precision Machinery Export-Import Corp., for a multibillion-dollar contract to provide a long-range missile and air defense systems. The selection of the Chinese system, dubbed HQ-9, created consternation within the U.S. industry and government. The State Department in February 2013 sanctioned the Chinese company over proliferation concerns.

Among the losing bidders for the contract was a team of U.S. defense industry giants Raytheon Co. of Waltham, Mass., and Lockheed Martin Corp. of Bethesda, Md. Both companies have said that, should Turkey change its mind, they are ready to provide alternative systems.  […]