Summary: South Carolina Governor Mark Sanford made a decision last month — stay home and fulfill his public and family roles, or sneak off to Argentina for a visit with his mistress. Sanford chose the latter, of course, and economist Tim Harford argues it must make some kind of sense. Harford writes the Dear Economist column for the Financial Times and is the author of the Undercover Economist. Plus: They paid off one mortgage and are considering another.
