yes
Yes, with her parents' consent you can get married.
In the US you can DATE legally but you cannot have and kind of sexual intercourse. Age of consent varies by country. UK is 16.
Yes you are in trouble. You are an adult and she is a minor.
No, not legally. 18 Is legal age. other wise the parents can have you charged.
Your girlfriend entered legally but now she is illegal What is the process now?"
Not legally. The legal age of majority in all but four states is 18. In Alabama and Nebraska it is 19, in Mississippi and Pennsylvania it is 21.
In the US you cannot legally have a girlfriend unless she consents.
No. At 17 she is still a minor even though she is having a baby. Legally, that doesn't make her an adult. If she was legally emancipated she could, but that is a legal process that requires a lawyer and to go before a judge.
23+17 is 40.
There is nothing wrong with that at all. My dad is one year younger than my mom and they are both perfectly fine with that.
Unless the 17 year old son is an emancipated minor, he is still subject to the rules and discipline of his parents. If he is still a minor and having sex with the 23 year old she can be charged with child, or statutory, rape. Or, she could be reported as contributing to the delinquency of a minor. You're undoubtedly right to be concerned about this, but don't expect your son to thank you for this interference in his life