Say Goodbye to Permissionless Travel

Once upon a time, citizens of the United States could travel to almost every country in the European Union for 90 days without asking any government for permission beyond showing a passport at the initial point of entry. It was—and still is, for a few waning months—a marvelous if underacknowledged achievement for liberty.

Alas, the days of frictionless travel will soon be a memory. Starting at a so-far-unspecified date in early 2024, Americans and residents of 62 other countries that currently enjoy visa-free visitation to the Schengen Area of the...