The US government has once again made a strange decision to ban travel from 12 countries, including Iran, on security grounds. But are Iranians really a threat to US national security? A review of the statistics of terrorist attacks on US soil over the past 25 years shows that no Iranians have played a role in these incidents. This decision has put the lives of thousands of Iranian students at risk. Is this ban really a security decision or a political game? An open letter addressed to Trump and the US State Department has answered this question with historical and statistical documents.