I guess I should explain better. I have cr cards from all the major banks and many not-so-major banks (BofA, Cap One, Chase, WaMu, Barclays/Juniper, Discover, Wachovia, etc.) After calling 4 or 5 of them to inquire about making my wife a joint card-holder rather than an AU I was only told that it could be done with 1 of them by keeping the same account with the seasoning attached to it and without basically a whole new application and new credit qualifications. Several of the lenders said that we could easily apply for a new card jointly but that there technically could not be a continuance of the original account if I wanted it to become joint. Of course I may have picked the wrong cards and should continue my calls to the other lenders but it appears that the odds are stacked against me if I simply want to make someone a joint card holder on an existing account.
I'll make some more calls and see what happens. I also see from one of the threads that Discover does allow and Amex does not...I can add to that...Cap One would not allow me and nor would WaMu and Juniper/Barclays. Discover told me that with the application from AU to joint that the continuation of the account could mean a lower credit limit or obviously that the new borrower may not qualify at all to join me on the account...seems somewhat risky in most circumstances I would think.
It's also important to note that one of those CCC's told me that I could move someone from AU to joint and it wasn't until I probed further that it came out that it would actually become a new account alltogether...again, this would defeat the purpose.