Amtrak 3 (P42DC) sits at Nigara Falls On the Canadian side of the Niagara River. It arrived around 30 minutes late and took forever to board, having to shunt the stock back and forth so the coach you entered was near the station entrance. We only travelled a mile over the river into America when the train was shunted into a siding. American Border Agency guards entered the train insisted we all get off and given the third degree filing in forms etc. We departed around 12.30 for New York, 1Hr 50 min after hour booked departure time from Niagara.