Many studies use tariffs to measure changes in trade policy. This paper shows that standard sources for tariffs suffer … from substantial measurement error due to misreporting and the resulting false imputation: Countries fail to report tariffs … every year and missing data are more prevalent for preferential than for most favored nation (MFN) tariffs. WITS, the main …

that offsetting effects on the newly imposed tariffs were substantial. …

negative direct effect of US tariffs on US imports from China, but (2) do not find evidence for significant short-run trade …