yes
yes
By applying to a court.
Not arbitrarily. The custodial parent would have to receive permission from the court for the change in residence.
No.
If you are the custodial parent you can.
Karma is a great thing. The non-custodial parent will eventually lose if they did not file expressly to avoid the refund going to you. However, look at the IRS site for exceptions which allow not filing.
According to Judge David Grey Ross, Commissioner of the Federal Office of Child Support Enforcement, no.
need court approval.
No. State agencies are prohibited by law from releasing identifying information about either parent.
That's up to the judge, but generally is only applicable when a father gets custody while owing, as only 7 out of 1000 mothers pay support to custodial fathers.
His daughter - probably. Her baby, no. see links below
No, there are no laws in Virginia that makes it illegal for a custodial parent to live with their boyfriend or girlfriend. If you feel you child is unsafe in this situation, you will have to pursue custody through the courts.