Posted on Wed, Oct. 20, 2004U.S. to Enforce Rules for Mail to CanadaWASHINGTON (AP) - Most mail to Canada must bear the complete name and address of both sender and recipient or it won't be allowed into the country, the U.S. Postal Service said Wednesday. The tighter addressing requirements are in response to increased security. Even such sender or recipient identifications as "Grandma" or "Aunt Ruth" can result in mail being rejected, the agency said. All mail, except post cards, that does not show the complete name and address of sender and recipient - in Roman letters and Arabic numerals...