Good question. I don’t know much about Canada’s citizenship laws. Of course, I don’t think Cruz or his sister (brother?) were anchor babies. But I knew a woman who was born in France to two Americans and couldn’t get a work permit there, even though she had spent every moment of her entire life there. Not every country has birthright citizenship.
1. Evidence of U.S. Citizenship
You must submit one of the following certified documents as primary evidence of U.S. citizenship for your child (Photocopies and notarized copies are unacceptable):
Certified U.S. Birth Certificate (must meet all of the following requirements):
Issued by City, County, or State of birth
Lists bearer’s full name, date of birth, and place of birth
Lists parent(s) full names
Has date filed with registrar’s office (must be within one year of birth)
Has registrar’s signature
Has embossed, impressed, or multicolored seal of registrar
Previous U.S. Passport (may be expired, must be undamaged)
Consular Report of Birth Abroad
Certificate of Naturalization
Certificate of Citizenship
http://travel.state.gov/content/passports/en/passports/under-16.html