U.S. Citizens are not required to have an ESTA and are required to use their U.S. passport to travel to the U.S.
Do U.S. citizens need an ESTA for UK?
The United Kingdom is just one of the countries beneath the US Visa Waiver Program, that are eligible for a US ESTA. To put it differently, you need an ESTA to go to the US if you are traveling from the UK. But, remember that you must be a British Citizen to apply for this document.
Do you need an ESTA if you have a green card?
Q: I am a legal permanent resident (green card holder) of the U.S. and a citizen of the VWP country. Do I need to apply for ESTA? A: No.
Can I stay on Green Card forever?
Once you become a lawful permanent resident (Green Card holder), you maintain permanent resident status until you: Apply for and complete the naturalization process; or. Lose or abandon your status.
Can I move to US without a Green Card?
If you do not have a Green Card, you will need either a valid ESTA or an appropriate US visa to enter the USA, depending on the purpose and duration of your stay.