I'm Lucy, and I'd be happy to answer your questions today. I'm sorry to hear that this happened.
Under the full faith and credit clause to the U.S. Constitution, a PA child support order is valid and collectible in Florida. There are two ways to do this. One is to file the court order in the Florida courts and ask them to issue a new, Florida order. This is called domesticating, and any Florida family law lawyer could do it if you don't want to have to take time off work and away from your children to help collect it. The other option is to contact Child Support Enforcement. Talk to PA enforcement, let them know the father is in Florida, and see if they can contact Florida on your behalf, or if they want you to do it. Once the state is involved, they have the ability to cancel his driver's license or contractor's license, and even his passport, but they have to be helping you collect first.
The child support calculation is based on the law of the state that enters the order (which is usually where the children live). However, you're allowed to file a Motion for Modification any time the father's income increases significantly over what it was when the order was first entered.
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