What happens to joint credit card debt in divorce ?

The short answers to your questions are: Generally, it is split. Maybe, depending on the facts. Debt, like assets, are generally equally divided, but the court can do otherwise in "compelling circumstances."  See the article "Allocation of Debt at Divorce" posted at http://willicklawgroup.com/published-works/. Normally, whoever gets an asset gets the debt attached to that asset (such as a mortgage) unless there is some good reason to do otherwise (like a second being taken out on a house to get a car, and the other party keeping the car).  For an analysis of your specific facts and circumstances, you really should consult with a qualified family law attorney, in this or some other office.