No, it's there, follow this link, order something, it will allow you to create new contact with United States as your country:
https://www.ovh.com/fr/commande/kimsufi.cgi?hard=134sk1
At this point it doesn't matter what to order, you will have to place your order again once VAT is removed from your account.
Just did this. Now (in french of course) they want me to send an email to verify my identity with a scan of my drivers license or passport before being able to purchase. Not sure if I want to do that...