So long as the order is properly entered, I wouldn't see how the ex could avoid payment. He's entitled to assert certain, limited defenses, such as that the German court lacked proper jurisdiction. In any event, schedule a consultation with a NYC Child Support attorney for a full assessment.
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No. Men had to pay even when they were under a Ukranian Writ to pay support. He'll be nailed with the registration (unless he has a statutory defense which I doubt he does) and you'll eventually violate him. $90,000? That's high.
Hopefully he doesn't flip custody to do the same to you.
File for a violation and have the order registered in NY. You may be entitled to support and legal fees, interest and even seek his incarceration if it was willful.
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