US Student Studying Abroad

How would a US citizen studying in Canada be compared to an international Canadian student. Would there be special priority? I know schools like Penn only admits 10-30 Canadians a year so would one be given any advantage against the applicant pool?

I do not fully understand your question.

Are you currently a high school student attending a high school in Canada? What is your status in Canada? Why do you want to attend the University of Pennsylvania?

Penn is a reach for nearly every student. Without knowing more about you it is hard to say much more.

It’s always better to be a US citizen than international when it comes to admissions.
Not sure what you’re asking though.