We identify the main shock driving fluctuations in long-horizon productivity expectations, consistent with theories of TFP news. The identified shock induces strong comovement patterns in output, consumption, investment, employment, and stock prices even though TFP does not change significantly...

Using a newly created microeconomic archive of U.S. imports at the tariff-line level for 1930-33, we construct industry-level tariff wedges incorporating the input-output structure of U.S. economy and the heterogenous role of imports across sectors of the economy. We use these wedges to show...