Canadian broadcasters being unfairly harassed and denied entry into the United States want the American ambassador to Canada to press his government into reigning in its border officials. Broadcasters and unions say crews have been prevented from entering the U.S. to make documentaries when U.S. Customs staff decided that the productions were not non-fiction. In at least one case, Canadian broadcasters had to buy footage from U.S. producers after being refused entry to film an event.