Replying to Is This A Good Adventure?

So I was brainstorming ideas with my friends, and I realized how potentially crazy it would be to illegally immigrate to the U.S.
Living in Maryland, I'm already a U.S. citizen and such, but what about flying to somewhere like Mexico City over the summer and then trying to work my way back to Maryland with only a couple hundred dollhairs.
I'm not sure what laws this would be breaking since I am already a U.S. citizen going back to my own country, but even if I was to get arrested, I'm 17 so I think I would still be okay.

Any opinions on this or legal aspects?