United investigates after agent allegedly threatened to call ICE on passenger in viral videoSAN FRANCISCO -- A man says he was offended and shocked after a United Airlines employee at San Francisco International Airport suggested calling U.S. Immigration and Customs Enforcement on him during a confrontation over a ticketing issue. He said the error sent the family back and forth between United Airlines and Air Canada counters for hours. Varela said an Air Canada employee was working to resolve the issue when a United employee joined the conversation. "That's what triggered me to say, 'you're rude.' In a statement, United Airlines said: "We're looking into the interaction in this video, but don't have anything additional to share at this time."