It is possible to visit the people with the American passport? There is no limitation for US citizen to travel Iran. To travel Iran, U.S. citizen should get visa in advice. To make this easier, Iranian government issue online visa without making an appointment in Iranian embassy.
Discover Tehran Group will support you in this travel to get the all advices and traveling requirments. For more information of Iran Visa, and how to book the Iran tour, click in the following button. How can we book the Iran photography tour