The Iran nuclear pact could eventually help thousands of Iranian-Americans who have struggled with red tape, shuttered accounts, and even criminal prosecution to conduct bank transactions, although relief seems unlikely anytime soon. As Washington tightened sanctions on nearly all trade with Iran in recent years, international banking transfers that most Americans take for granted have become increasingly fraught for the roughly 500,000 U.S.-based Iranian-Americans. Iranian-Americans and their families seeking to send and receive remittances have been hard hit, from students at U.S.