
For the anglers that fish St. Clair and any other Canadian waters you are now required to have a non-Canadian resident Outdoors Card along with your Canadian Fishing license.
"An Outdoors Card alone is NOT a fishing license"
Who needs to purchase a non-Canadian resident Outdoors Card and fishing license tag to fish in Ontario?
Anyone who lives outside of Canada is considered a non-resident for the purposes of fishing license regulations. Most non-residents need a fishing licence to fish in Ontario. Specifically:
Non-Canadian residents 18 years of age and over must purchase a fishing license.
Non-Canadian residents under 18 years of age may fish without a license if accompanied by an adult (resident or non-resident) who has an Ontario recreational fishing licence. Any fish caught are part of the catch and possession limit of the adult who holds the license. As another option, non-Canadian residents under 18 years may purchase a licence and any fish caught apply to the catch and possession limits of that license.
Non-Canadian residents 65 years of age or older are not exempt from licensing requirements.
Read more here at the OMNR