As far as I know, there is no federal limit on the amount of wine/spirits that you bring into the US. There is a limit to what may be brought in duty-free. Above that amount, you may be charged duty.
If my memory serves me well, the duty is not very high. Additionally it's been my experience that US Customs waives the duty in most cases as the paperwork costs them more than what they would collect in duty. Note that I haven't done this in several years.
My advice: just declare the stuff and pay the duty, if needed.
[This message has been edited by BillMorrow (edited 12-08-2001).]