Yes
Whether the woman is an illegal alien or not, the man is married. You should back off and break off the relationship with him.
yes
No.
No, but it should be.
Generally, there is no citizenship requirement for marriage. The woman may present a foreign passport and you can present your U.S. passport when applying for a marriage license. Other than that, there is no difference in the process for marrying.
I really don't know but no one should marry their brother it is gross!
18 or 16 with parental consent. In some states 16 if the woman is pregnant.
Navade
Kentucky
no, but a Muslim can. it is illegal if you are christian.
Yes they should because the baby needs a moommy and dad so incase you brak up and you should marry then get pregnant
Adultery is not illegal - the man will not be prosecuted.