Yes, if the father has more time with the child than the mother, she will owe him child support.
Yes, as long as the legal custody schedule is changed, child support can also be adjusted.
If the mother has the full custody then she can take the child, and she can get the child support. If she doesn't have the full custody, then she is not allowed to take the child without the father consent, but she still can get the child support.
Filing for child support has no bearing on the issue of custody. Custody is decided on the basis of the welfare of the child. To get custody of a child, the father would have to demonstrate that he would do a better job as parent. I will add that even if you do need financial assistance, that does not in any way suggest that you are not a good mother. Those are separate issues.
Yes if she is entitled to child support after all of the calculations are done. Immigration status has no bearing on child support.
Any mother can go to court in the US to claim child support form the father for a child she is caring for. Babies are not born by spontaneous combustion. The father is as responsible for the child's welfare as is the mother. If the child is living with the father and custody given to the father, the mother is liable for child support, too.
Properly no, but mothers frequently do this, also in multiple states. It also happens when they collect Welfare from different locations. It can be expensive for the father to hire attorneys to fight the multiple claims.
yes
If he's on SSD, than you can get the separate child benefit check. If on SSI, than there's no obligation. You go to welfare.
In Alabama custody and visitation have nothing to do with child support. Not sure about other states.
Yes, if the father is not given custody he will be obligated to keep paying support to whomever the court awards custody or guardianship of the children.
In most breakups it is the mother who gets custody, however, the legal basis for deciding who gets custody is the welfare of the child, so if the father can demonstrate that he is a better parent, he can get custody.
My answer to that would be 'No'. The father is responsible for providing child-support regardless of who has custody of the child; at least until the age of 18.