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The Iran Sanctions Enhancement Act of 2007, introduced in the United States House of Representatives by Representative Mark Kirk, Republican-Illinois, and Representative Rob Andrews, Democrat-New Jersey, would have threaten sanctions against any company or individual that provided Iran with refined petroleum products or engages in an activity that could contribute to the enhancement of Iran's ability to import refined products after December 31, 2007. The bill was never voted on and died in committee.
The bill could have potentially lead to sanctions against gasoline brokers, tankers and insurers. U.S. companies are prohibited from trade with Iran under unilateral sanctions, but most foreign companies are free to trade with Tehran.
The United States, which was leading efforts to isolate Iran over its nuclear plans, has said Iran's gasoline imports are a point of "leverage." Washington accuses Iran of seeking to build nuclear weapons, a charge Tehran denied.
Unlike other US sanctions programs, foreign subsidiary companies of U.S. companies would not have been restricted from doing business with Iran, even to the extent of supplying U.S.-origin goods to Iran.