We now get the same Tackla pants the US had in retail for many years. Made in Thailand by Montreal Hockey Co
Eagle PPF (Made by Vaughn, they used to make pants under the Tackla name in Canada before the Eagle buyout) and Warrior Hustlers are the only two Canadian made retail player pants I can think of off the top of my head right now.
It's hard to find North American-made player gear nowadays unless you go custom or pro stock.