One hundred and forty one years ago today, July 1st, 1867, Canada DID NOT declare its independence from Great Britain, but rather officially became a member of the Commonwealth.
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But, hope remains that one day Canada will declare its independence from BOTH Britain and the U.S….

Oh I doubt whatever this guy is blogging about happened as he wrote. Either way, Canada's head of state is HM Queen Elizabeth and it's much better than a Bundespräsident.
This article is rubbish. Canada never became part of the Commonwealth in 1867 but rather remained part of the realm of which the King or now the Queen remained the head of state. Even now, it's not really part of the Commonwealth [of nations], but more the Commonwealth Realm and most Canadians are quite content with that.
What's with an American blogging to say Canada should have become independent from the Queen in 1867?

Canada when it was a royal province of France, was part of the French empire starting 400 years ago. Then we joined the British empire post-1759, after the Conquest. This is considered by many to be the start of the British empire.
The British empire, gets forgotten, but was going strong until the early-mid 20th century. In 1952, Vancouver had "Empire" Stadium (now torn down) built for the Commonwealth games. Why wasn't it called Commonwealth Stadium?
July 1 is Canada Day because we've forgotten about Confederation and it couldn't be called Independence Day because we didn't get our formal political independence from the United Kingdom in 1867.