Respectfully, the Canadian accent (really, Canadian English) is noticeable and distinct from US English, in its pronunciation, vocabulary and grammar. Yes, there is a lot in common with US English, but calling them the same loses an enormous amount of nuance.
On the other hand, the difference between a dialect and a language is an army and a navy, neither of which Canada has much of.
On the other hand, the difference between a dialect and a language is an army and a navy, neither of which Canada has much of.