Mohammad Rafatinasr, 32, a mechanical engineer, was set to fly to Las Vegas to present a paper at a research conference. He was booked on an Air Canada flight and presented his passport and visa. But when an airline official ran his passport through a computer scanner, she told him he was "inadmissable." Rafatinasr asked why, repeating he had received a visa from the U.S. consulate just days before but the agent had no answer. "It's disappointing for me that I am not able to be there there to express my work myself," Rafatinasr said.

Source: CBC News January 30, 2017 01:25 UTC