Mona Zabihian, an Iranian American, attempted to return to Washington state from Canada late Saturday after attending a concert — a trip she said she makes several times a year with no issues. This time was different, Zabihian said, as she and dozens of others were questioned and held for hours. “We went inside, we saw a bunch of other Iranians, pregnant woman, children. I saw one of my friends from Seattle,” she told NBC News. Immigration authorities asked her about her social media accounts and the last time she had been to Iran. “They asked if I was in...