I have smuggled all manner of shit across the border. Here's the deal: 50/50 you might get caught. If you get caught or caught trying to conspire, your looking at about 10 years in jail just for helping, more if your caught for possession with intent. Your safest bet is mailing it through another country and having it re-directed to you in the US. Failing that, anything you do will carry extreme risk. Having someone else swallow condoms, you won't know how they re-act. Maybe they get nervous at the border crossing, maybe it explodes in the stomach in which case you could get dinged for manslaughter or worse.
If your after the money, just remember the less risk YOU take, the less money you make. If you aren't comfortable with my first suggestion, the only logical option is to swallow it yourself. Every other method has been tried and foiled. Everything you can think of has already been done.
Unless you have a system that is your best bet.