William McKinley – IQ 143.4

William McKinley’s election breathed new life into the US economy as the country was recovering from the Depression and industry proliferation. Let us tell you that he is above average on our list of presidents. Well, you might be wondering, why? William’s unfailing support for the gold standard is what won him a good ranking.

Unfortunately, with the abrupt end of McKinley’s term, the Congress passed legislation charging the Secret Service with presidential security. The department has since then done an admirable job of keeping the heads of state safe both during and after their time in office.