A company which lost business when the federal government took over security screening at airports after the September 11th, 2001, terrorist attacks has filed a lawsuit, claiming its propoerty was unconstitutionally taken. Huntleigh USA Corporation, based in Creve Coeur, claims the Transportation Security Administration failed to compensate the company for the value of its business as a “going concern.” Huntleigh claims the Transportation Security Administration violated both the law and the Constitution by taking private property without just compensation. Huntleigh was one of several airline screening services. It lost 3,000 screeners, leaving behind skycap, wheelchair, and janitorial services. Revenue figures have not been released.