> U.S. law could bar from you from bringing your ticket back
If you buy your ticket in the U.S. and bring it back to Canada, an obscure federal law could potentially stop you from returning Stateside to cash it in.
The "immoral articles law" forbids "importing into the United States from any foreign country" a number of items, including obscene materials, abortion-inducing drugs and, you guessed it, lottery tickets.