Because letting China post a military force of that size near our border looks an awfully lot like taking us for granted.
Imagine if this were Putin's forces, because there is no difference between him and Xi.
I also want to point out that with your last post here, you are the only Dem on this board who has said that they even see a problem here.
"I didn't say that I like it" is a pretty weak condemnation, but it's something I guess.
The reason that Canada was letting fentanyl and illegal Chinese across our northern borders was because Biden/Obama looked the other way.
The reason China has their army in Canada is due to the same reason with a corrupt Canadian leader.
How about Canada start acting like the ally that it has been historically rather than the past 12 years since Trudeau came in and get China's army the fuck off of the North American continent...you know, like a good ally would?