AMERICA'S Got Talent will be based in Toronto?
Guy's Canada is not a state... not part of our country.

(technically though, they are part of yours -- the UK)
The best way to know about the Cattle Calls is to;
a.) Subscribe and READ both Variety & the Hollywood Reporter as well as another little gem entitled CASTING CALL
b.) Go to their web site and see if there is a newsletter & notification sign-up (I'm betting there is)
c.) Shoot video of your act now, get it on-line and send the PRODUCTION COMPANY links to it.
Steps A&C will open doors for you in other areas.
BUT (yes, this is the other foot dropping).
Are You Honestly Good Enough & Unique Enough to Make it Through?
Bear in mind that NO MAGIC RELATED ACTS have gone for more than 6 episodes I believe it was... that includes major players like Kevin James who's won awards and accolades from around the globe from major VIPs and magic organizations.
Are you willing to put up with Pier's near instant loathing of magic & variety entertainers and the fact that Hasselhoff only gets super interested if you have big tits.... the only half-way honest judge being dear Sharon.
I was watching this clown from Chicago on their last night... Pier's was 100% correct in his summation... the guy looked like he just went out and found a box full of tricks and threw them together... HE DIDN'T HAVE AN ACT... sadly, this guy is highly reflective of what most magic buffs actually look like when they perform... NONE OF US (well, very few) being anything remotely as good as our fantasy makes us in our own mind.
So think it through and KNOW that you can win FISM and then some, before you set yourself up to be roasted on that program in front of millions. You (anyone of us) wanting to make it even half-way through the finals must be better than great going in, because you are dealing with pricks that don't know a thing about magic, who look
down at it as something boorish (and trust me, this is very typical) UNLESS you are so exceptional and so flawless not even the most critical judges in our industry can find fault.
So take that deep breath and think about this honestly instead of with your ego... are you ready or are you willing to invest every minute you have in every day to be ready with all of the material, choreography, etc. you are going to need for making it through.
Sorry for sounding like a sour puss, but I think a dose of reality needs to be sucked up on this just for a matter of self-preservation.