If Romney’s dad was born in Mexico then the question is when did he become a US Citizen?
If he was a US Citizen and his mother was a us citizen when Romney was born (in the US) then romney is a NBC (natural born citizen) and eligible
dammit..
Here’s a link that explains Romney’s eligibility...
http://www.freerepublic.com/focus/f-bloggers/2702624/posts