While readily acknowledging the sort of comments you refer to from time to time from various elements with both the Chretien & Martin Liberal regimes, I don't recall any in the immediate aftermath of 9/11.
Especially, with
two dozen of our own citizens murdered in the WTC - not to mention numerous other victims with family & friendship ties to Canada - and
massive pro-American rallies taking place all across the nation, commies with any brains whatsoever on both sides of the border STFU at least temporarily.
Further and in a more general sense, the left's anti-Americanism is deemed so nationally embarrassing as well as self-evidently detrimental to both cross-border goodwill & trade it tends to really rally the Conservative base up here:
Personally, rather than rely on RINO Powell, I'll go with the more trustworthy recollections of U.S. Navy Captain (Retired) David E. Meadows who was actually at the Pentagon on 9/11 when it comes to adjudging Canada's 9/11 response.
Thank you, Captain Meadows and God Bless America!