The Miami Herald business book review column.

By Richard Pachter, The Miami Herald Knight Ridder/Tribune Business News

Jan. 17--The United States of Europe: The New Superpower and the End of American Supremacy. T.R. Reid. Penguin. 320 pages. $25.95.

The value of the dollar is plunging and the euro, the currency of the European Union, is rising. But unless you're traveling, you may not care.

You should care a lot.

Here in South Florida, we rightfully focus on Latin America and the Caribbean, and indeed, their true economic potential may someday be realized. Many also look to Asia as the eventual dominant commercial force on the planet.

But right now, it is the European …