Dual nationals must apply for ESTA using the passport that will be used to enter the United States, and the same passport under the Visa Waiver Program (VWP) must be used continuously from the time of departure until arrival in the United States.
If both nationalities are from VWP countries, it is recommended to choose one passport for travel to the United States and use that same passport consistently throughout the trip.
* If separate ESTAs are issued with different passports, it may cause system confusion, which could lead to boarding delays or problems during immigration inspection, so caution is advised.