Texas law prohibits contracting with companies boycotting Israel or doing business with Iran or Sudan or foreign terrorist organizations on the U.S. Government's SDN (Specifically Designated Nationals and blocked persons) List. Other states may have similar laws. All new PCA contracts and current contract holders at annual contract renewal will be required to sign off on this legislative requirement. TX GOV'T CODE, Chapters 2252 and 2270, respectively, as amended.