President Donald Trump’s executive order banning citizens of seven countries to travel to the U.S. for 90 days is affecting a recent Clemson University grad, who has been barred from traveling back to the U.S. Nazanin Zinouri, a recent Clemson grad with a Ph.D. in industrial engineering, was shocked to find out that she cannot return after her vacation to see her family in Tehran, Iran. The data scientist, who works for an Upstate technology firm called Modjoul, has all the paper work and documents necessary to work and live in the United States.