The Democratic lawmakers, including Michigan’s Debbie Dingell, sent a letter to the Trump administration questioning the treatment of Ontario native Kevin Larson.
The Detroit News reports, Larson says he attempted to cross into Port Huron last year to join a No Kings rally.
But he says border agents threatened him with jail time if he did not provide a DNA sample, along with being fingerprinted and having his phone searched.
Larson reportedly has no criminal record.
But he alleges that even after border agents took his DNA, they still told him he could not enter the U.S., because of the nature of what he planned to do, which was attend a protest against President Trump.
