I live in Canada and want to cross the border to Detroit in a limo Can 5 18 years olds and 7 16 year olds cros

Question

I live in Canada and want to cross the border to Detroit in a limo Can 5 18 years olds and 7 16 year olds cros

Answer 1

I think all the minors would need notarised  letters of permission to cross the boarder from both parents.

Answer 2

the 18 year olds can...

the 16 year olds (as the person mentioned above) need to get a signed letter of consent signed by both parents and guardians that must be notarized ( must visit lawyer) for that