 Such action against Iran's central bank – which serves as a clearinghouse for nearly all oil and gas payments in Iran – will make it more difficult for Iran to sell crude oil, its chief source of cash, by blocking companies doing business with it from also working with US financial institutions.Some Iranian officials have likened such a step to an act of war.The House Foreign Affairs Committee has also passed the Iran Threat Reduction Act which makes it illegal for U.S. diplomats to engage their Iranian counterparts, strips the President’s authority to license the repair of Iran’s aging civilian aircraft to prevent civilian deaths, and imposes indiscriminate sanctions that could increase gas prices and hurt the Iranian civil society.