If he is married to your mom, isn't he regarded as a legal resident?
"my mom and him married (they did really love each other, and please discard the marrying for a green card thing, that is a movie cliche for the most part).
There are many people on FR that are surely literate enough to go to this site and read a few rules and prices and leave those myths behind.
As far as I'm aware, a couple must be married 2 years before the immigrant can apply for a green card (legal status).
"If he is married to your mom, isn't he regarded as a legal resident?"
No. Even married to a US citizen, an alien still has to apply for a carta verde.