Can I Travel to the U.S. on My British Passport Instead?
Q: I have dual nationality but my U.S. passport has expired and I need to go the U.S. very soon. Can I go there just using my British passport?
A: It is federal law* that all U.S. citizens, even dual nationals, must enter and depart the United States using a valid U.S. passport. It will therefore be necessary to replace your passport prior to your travel to the United States.
We are currently processing U.S. passport applications in approximately 10 working days. Please let us know when you submit your application that you need to travel urgently, and we will process the application as soon as possible for you.
For more information on passport renewal, please visit http://london.usembassy.gov/cons_new/acs/passports/index.html and select the service that you require from the left column.