US citizenship cannot be lost by her becoming a Mexican citizen. Mexico would control whether she becomes a Mexican citizen. US has no involvement in the process.
He is both Mexican and American. He has dual citizenship.
Most foreigners can obtain a Mexican passport if they move to Mexico with an immigrant visa and live there for four years (2 years if married to a Mexican citizen). Then one can apply for Mexican citizenship and passport.
You must move to Mexico with your spouse and live there for two years with an immigrant visa, then you can apply for Mexican citizenship. You can have both a Mexican and a US passport and be a dual citizen. If you were not married to a Mexican citizen, you would have to live there for four years.
Yes. You must be Mexican by birthright and have one or both parents of Mexican citizenship.
marry a Mexican citizen apply for citizenship after 2 years of been together, move to Mexico work or live there for more than 5 years apply for citizenship
You never loss you citizenship, unless certain acts of war (treason, defection) are committed. No, if you marry to a Mexican in Mexico, you don't loss you citizenship. You should note, however, that he/she is not granted American citizenship automatically.
I want to marry a girl America
More than likely, you are already a Mexican citizen. Get your birth documents together and just get a mexican passport to prove Mexican citizenship.
Yes, the child is entitled to hold citizenship of both Mexico and the US.