While your cargo may arrive via ocean vessel into Canada and then railed into the United States through Canada, as it is not arriving directly into the United States via ocean vessel, an ISF 10+2 filing is not currently required by US Customs.
By far, the most inexpensive method of transporting ocean containers across the United States or North American continent is by rail. While rail is a less expensive alternative to trucking, trucking is still the faster and more direct mode of transportation for cargo.
We can arrange your customs clearance and trucking an any of the major rail hubs or rail ramps across the United States.