How do I sign into Amazon Prime USA?
While logged in to your Amazon account in a desktop browser, go to Accounts & Lists > Your Content and Devices > Preferences and click the downwards arrow to the right of Country/Region Settings to view your current country. Hit Change and enter the new address you'd like to associate with your account.
Can I log into Amazon UK with US account?
You can't have the same details on your UK and US accounts. If you want to use the same email address for both accounts (which is allowed), you will need a different seller ID and a different login password on your US account.
Is USA on Amazon Prime?
Amazon.com: USA - Prime Video: Movies & TV.