Comment by junar

Well, if you read through your link, you'll understand what parent comment is talking about.

> Requirements for Canadian Citizens

> A visa is not required for a Canadian citizen entering the United States as a USMCA Professional, although a visa can be issued to a qualified Canadian TN visa applicant upon application at a U.S. embassy or consulate.

> A Canadian citizen can apply for TN nonimmigrant status at a U.S. port-of-entry. Learn about these requirements on the U.S. Customs and Border Protection (CBP) and U.S. Citizenship and Immigration Services (USCIS) websites. More information about receiving TN status without applying for a visa is also available on the U.S. Embassy Ottawa website.