In September of 2015, Congresswoman Susan Brooks (R-Indiana) authored a letter to Secretary Kerry reiterating legislative support for state sanctions. The letter was signed by 61 representatives from 25 states. Read more https://susanwbrooks.house.gov/media-center/press-releases/brooks-leads-letter-to-administration-in-support-of-states-rights-to
Brooks Leads Letter to Administration in Support of States’ Rights to Enforce Sanctions Against Iran
May 30, 2016
Iran State Sanctions project 