These Canadian wolves are no more indigenous to the lower 48 than would be the African lion or cheetah, or Bengal tiger.
Food will get scarce for them when they have depleted all the wildlife and maybe 90% of the humans in the continental USA. Good luck getting in that other 10%.
You must be kidding. Wolves don’t know borders. They’ve traveled all over the continent. Same with Mexican Gray wolves, or any other critter for that matter. My sister has a Coatamundi in the central AZ. Now if Bengal tigers can swim an ocean....
The wolves aren’t going to eat the people. Not even going to address your fears because the line of thought is just way too silly.