How many American-Mexicans and Mexican-Americans have 'Dual Citizenship' USA/Mexico?

Question

statics, sources, links, thx.

Answer 1

Probably more now. My daughter is  since I am a US Citizen and her father is Mexican.

"A proposal by the Mexican government would allow as many as 5 million Mexicans living legally in the United States to maintain Mexican nationality even after taking the oath of allegiance required to become a U.S. citizens. The 1990 Census listed 4.3 million Mexican-born residents, less than one million of whom had already become naturalized as U.S. citizens. Over two million Mexicans have been legally admitted since 1990. Benefactors of the proposed change would include Mexicans who have naturalized, amnestied illegal aliens who are now eligible to naturalize, and so-called "border babies," children born in the United States of Mexican parents. Under U.S. law, those children are automatically U.S. citizens by virtue of their birth on American soil. But under current Mexican law, the children are dual nationals until age 18, when they must renounce their U.S. citizenship if they want to retain their Mexican nationality. The proposal for dual nationality would allow "border babies" to maintain their U.S. citizenship and their Mexican nationality indefinitely."

Answer 2

About 35,000 U.S Citizens have dual citizenship Mexico-USA.