This depends on what country he is coming from. He may need to apply for a visa.
No, a father smoking marijuana will not hurt an unborn child. The mother should do her best to stay out of the room, but the father smoking will not hurt.
You can't confirm the father of an unborn child, but once the baby is born a paternity test can be done
As soon as the child is born.
Absolutely.
In the United States the father has no rights until the child is born.
Yes, you typically need to bring your child with you when applying for their passport to verify their identity and have their photo taken.
no
get married
No
no.
No, the child has to be born first.
A court would never award custody or visitation rights to a convicted child abuser.