According to a recent bulletin, Starting in 2025, Americans will have to pre-register before traveling to any of the countries in Europe with the new screening system called ETIAS. ETIAS is valid for three years, or until your U.S. passport expires, whichever is sooner. To get ETIAS, you need to: Register online, Provide your U.S. passport details, Provide your personal details, and Provide information about your trip.
The system will check the security credentials and charge a fee to travellers visiting EU member countries for business, tourism, medical or transit purposes. ETIAS is a travel authorisation for travellers not requiring a visa to visit Europe. These visitors will undergo additional security checks prior to being permitted to enter the EU. The ETIAS will be mandatory for citizens of countries including the United States, Australia, New Zealand and Canada.
Please provide more detailed information about this -- It seems confusing. Thanks!