Originally Posted by
jakeoh
I'm not a frequent traveler. I'll be traveling YQB - YYZ - SFO - MEL (Australia). Can MPC help me? If so, I would be filling the form before my flight from YYZ and then use the QR code in SFO?
There is different incoming transit passengers to US procedure depending on which terminal you arrive at YYZ as well as whether there is a terminal change required.
MPC would help to shorten the lineup. You will be using that to pre-release by US immigration at YYZ.