No, but it makes it easier
If I Marry An Illegal From Mexico Can He Become A Citizen
No. Neither will automatically become citizen of the other country.
American settlers had to become a citizen of Mexico and follow Mexican law.
No. Immigrants must fulfill certain requirements to become Mexican nationals.
Not automatically. They have to apply for a green card and then apply for Naturalization.
Last time I checked no. Even if you become a citizen of Mexico, you don't have all of the rights of native mexicans.
father borm in san francisco but the mother is an mexican citizen and baby born in mexico is the baby an american citizen
More than likely, you are already a Mexican citizen. Get your birth documents together and just get a mexican passport to prove Mexican citizenship.