The non-custodial parent will still owe child support, even if he or she is disabled and on welfare. However, most states will not garnish needs-based assistance such as disability or welfare payments. So if the parent is not working and does not pay his or her court-ordered child support, it would be difficult for the state to collect. He or she might still be arrested and jailed for failure to pay.
Yes, when the primary parent goes on Welfare. Authority to collect is transferred to them.
until they are 18
If the child is severely disabled, perhaps.
YES - if you can document that your support is 50% or greater of the parents disability check
Not usually, but there are some cases in which you might. 1. Some states require the non-custodial parent to continue to pay child support if the child hasn't graduated high school and is still living with the custodial parent. 2. If the child is disabled, there is no cut off age for ending child support. The non-custodial parent will continue to owe child support for as long as the disabled child lives with the custodial parent.
Welfare
If they can establish the stepparent as a primary support in a parent/child relationship.
"reimbursed" ... Not clear whether you mean collects welfare or collects child support, but in either case the answer is, the State will not reimburse the NCP.
yes..
A parent who is receiving public assistance (including SSI) should not be ordered to pay support.
If the child is disabled, then yes, child support can be ordered for life.
Yes, if the NCP has little or no income of any kind.