Q: How do I change my apps to the US

Hello Guessgirl,

Thanks for using Apple Support Communities.

For more information on this, take a look at:

iOS: Changing the signed-in iTunes Store Apple ID account

http://support.apple.com/kb/HT1311

Change your iTunes Store country

Sign in to the account for the iTunes Store region you'd like to use. Tap Settings > iTunes & App Stores > Apple ID: > View Apple ID > Country/Region.

Follow the onscreen process to change your region, agree to the terms and conditions for the region if necessary, and then change your billing information.

Best of luck,

Mario