Legislation designed to strengthen US unilateral sanctions against, and deter companies from doing business in, Iran could affect a variety of global business operations, including some with no direct connection to Iran. The legislation, which passed the House (on December 15, 2009, by a vote of 412-12) and the Senate (first on January 28, 2010, by voice vote, and then again for technical reasons, on March 11, 2010, by unanimous consent), now awaits further action by a House-Senate conference committee to reconcile the two versions.