Whatever the reason, the bottom line is that Dell will not accept an international credit card as payment for a US order.  
Greetings. My orders were canceled after the successful payment. Fonds were refunded, no problems with that, but I still would like to buy the laptop. And it seems that I can't I've tried 2 different cards from 2 different people. Same result. Judging by the number of threads in google with the "Dell order canceled" request, this is a very common issue. How do I solve this?   Thank you in advance.
The order was canceled twice, and no explanation was given