This has been done, however custody hearings tend to take time. If you are 17, you will proably be a legal adult before the custody hearing process has been completed rendering the whole process moot.
Custody was resolved. Mrs. Jackson (Michael's Mother) gets custody. Debbie Rowe gets visitation and continued Spousal support, even though MJ is deceased, she will continue to get it anyways.
Even though the mother is underage she still has custody of her child as long as she does not do something to get custody taken away from her
You can get legal custody over him if he is a minor in need of a legal custodian, if you are a responsible adult, and if a court agrees that you are the most suitable person to becustodian. this would be regardless of your living arrangements, as long as they are considered to be suitable for your half-brother.
He would have to petition the court. Unless the mother is unfit though he will get shared custody.
Since she is not married to you and she has full custody yes, she can ask for it. if you are paying the bills you can ask for it to be reduced by the court though or ask her to drop it.
Boyfriend or husband (unless he is the biological father) has no legal right to the child at all. The mother can try to go for full custody though.
Usally you have to go though the courts,unless you and her can come to some agreement.
If the mother is found by the court to be a more suitable guardian than the father, then yes, she can.
If so ordered by the court
Except in Arizona, the mother has sole custody and the father has to apply for his rights through the courts.
no because that would be endangering the welfare of a minor
With no courts orders in place, the father has no legal right to have the child living with him. The mother has sole custody and control in all states, and he can still be obligated to pay support for this time period. He needs to immediately file a motion with the court to establish his rights and for at least temporary custody, pending a full hearing, before she gets wind of the fact that she can take the child away from him at any time. see links below.