I don’t like dual citizenship. I think we should end it in U.S.
It's more than just morally or ethically wrong - his voting this way is a criminal offense in both countries.
Tax-wise....he’s not reporting his Mexican income to the IRS...you can bet on that. And that’s illegal.
If you want the dual problems...you deserve them....all of them.
I don't either. By the very definition of citizenship, a person should have to revoke their previous citizenship if they want citizenship somewhere else. And the voting in two countries situation?....it gives them twice the voting rights as I have.