Canadian Grain Shipped to U.S.:  Can Canadian-origin grain be commingled with U.S. grain at a U.S. elevator?

Yes. The commingled grain can receive an official USDA grade certificate.  As a result, Canadian wheat is eligible for domestic U.S. sale and export, based on the U.S. official specifications of the grain.  If Canadian grain is mixed, and loses its identity in the U.S. commercial system, it may affect its qualifications for U.S. phytosanitary certificate issuance to some countries.  (See section on phytosanitary regulations.)