USA ESTA Transit Visa for Passing through the USA from Ireland
An USA ESTA transit authorisation is for “permission to travel the United States” and does not allow you to transit to or visit another country. An ESTA Visa Ireland does not guarantee entry to the US. It is recommended to start the application process if you plan on visiting the US or crossing through the US in the next six months. If you are denied entry to the US while travelling, you will not be allowed to return to the VWP. You will need to apply for a B-2 Tourist visa.