You can link your credit card to PayPal and pay through PayPal as the intermediary. PayPal is a California-based company, therefore, you shouldn't have any problems doing it that way.
Some US Banks have a "default" setting of no international purchases, but if you contact them they will change that to allow them. Otherwise Paypal processes roughly half our transactions, so I'm sure you won't have problems there.
was able to go through with the bank, after having to sign a bunch of paperwork etc, saying the bank would not be libel or at fault if i lost my money if i used a over seas web site to order something.