No, I don't think so. The worst that might happen is you'll be asked a few extra questions by customs and immigration as to why you went to Iran and what you did there. Maybe you didn't know this, but the United States neither prohibits nor restricts its citizens from visiting Iran. It's perfectly alright for us to go there. read more
If you have traveled to certain countries, including Iran, Syria, Iraq, Libya, Somalia, Yemen and Sudan, on or after March 1, 2011, you will need to apply for a US visa. If you have dual citizenship, with one of the countries being Iran, Iraq, Syria or Sudan, you will need a valid passport with a visa stamp, instead of the ESTA. read more
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Secondly, regarding the new visa waiver law recently passed in the US, anyone from a visa waiver country who has a stamp in their passport from Iran, Iraq, Syria, or Sudan, will now have to apply for a visa to come to the US. read more