A us citizen wants to apply a green card for a wife who is already in the States and her 16 years old child who doesn't live in the States. Her child also has B2 visa. Should she come to the States and apply for a green card here? or if apply green card while she lives outside the States, can she come visit her mom with B2 visa? Does she have to go interview at a us embassy in her country? Her mom wants her to come wait here in the States any pros and cons?
thank you in advance
thank you in advance