Amazon US ask for my Tax and credit card info

Hi all,

I just registered an amazon UK seller account, but there is a message showing in my account info section stating tax info and credit card required by amazon US.

I have never registered with US, why they ask for tax info? of course I don't have US tax info at all.

What should I do? ignor it ? if so, can I sell in UK normally?

Any idea will be appreciated.

Ben