The Smoot-Hawley tariff of 1930, which raised U.S. duties on hundreds of imported goods to record levels, is America's most infamous trade law. It is often associated with--and sometimes blamed for--the onset of the Great Depression, the collapse of world trade, and the global spread of...

This paper calculates the Anderson-Neary (2005) trade restrictiveness index (TRI) for the United States using nearly a century of data. The results show that the standard import-weighted average tariff understates the TRI, defined as the uniform tariff that yields the same welfare loss as the...

The United States came close to complete autarky in 1808 as a result of a self-imposed embargo on international shipping from December 1807 to March 1809. Monthly prices of exported and imported goods reveal the embargo's striking effect on commodity markets and allow a calculation of its...