When the Panama Papers leaked, conventional wisdom held that Americans were underrepresented. Politicians from 50 nations were caught stashing large sums of money in offshore shell companies, and the U.S. was not among them.

The Panama Papers embarrassed the Chinese president brother-in-law and the Russian president’s best friend. Perhaps the reddest-faced American (if only because she had a secret account too) was Marianna Olszewski, author of “Live It, Love It, Earn It: A Woman’s Guide to Financial Freedom.”