I wouldn't say 'restricts', maybe 'operate within the law?'.
House Acts in Wake of Blackwater IncidentMeasure Is Passed to Place Wartime Contractors Under U.S. Courts' Jurisdiction
By Jonathan Weisman
Washington Post Staff Writer
Friday, October 5, 2007; Page A06
Prompted by last month's deadly shootings in Baghdad by armed guards working for Blackwater USA, the House voted overwhelmingly yesterday to place all private contractors working in Iraq and other combat zones under the jurisdiction of U.S. courts.
The 389 to 30 vote expanding the scope of the existing Military Extraterritorial Jurisdiction Act came over the strong opposition of the Bush administration, which objected to its broad application to a wide range of contractors working for U.S. agencies overseas.
http://www.washingtonpost.com/http://www.washingtonpost.com/wp-dyn/content/article/2007/10/04/AR2007100400282.html?hpid=topnews