In Illinois, yes, even if the child support obligor transfers his IRA into a new spouse's name. See Takata v Hafley at http://www.state.il.us/court/Opinions/AppellateCourt/2008/3rdDistrict/June/3070175.pdf
maybe or maybe not
Yes, it can.
yes
Yep
yes
yup
yup
In general, IRA accounts are protected from creditors in the event of a civil lawsuit judgment. IRAs have certain legal protections under federal and state laws, although the extent of protection can vary. It's best to consult with a legal professional familiar with the laws in your specific jurisdiction for accurate advice.
IRAs can be seized for child support. I suggest that you contact your State's child support agency. When you get an interview with them, bring all the papers relating to your child support: birth certificates, acknowledgments of paternity, court orders, payment records, etc. Be polite but persistent. Good luck!
The State can place a lien on an IRA to collect child support arrearages, yes.
An IRA is a retirement account for which there are heavy tax penalties for early withdrawal--and that is if you are willing. Most likely tax qualified retirement assets are protected from judgments and garnishments.
No. The asset to be seized must be owned by the obligor (either solely or jointly).
yes
No, the are protected by the courts.
For arrears, yes. see links below