This paper reveals significant errors in a key variable in international trade: tariff rates. The issues arise from incomplete reporting, leading to measurement error from false interpolation by the data provider, the World Integrated Trade Solution (WITS), and selection bias from dropping...

Many developed countries grant preferential tariffs to exporters from developing countries through the Generalized System of Preferences (GSP), aiming to enhance growth through exporting. On December 31st, 2020, the US GSP expired because the US Congress failed to agree on renewing the...

This paper uses two empirical tools to quantify the impact of tariff changes on bilateral trade and welfare. Both tools are rooted in structural gravity literature. The first tool estimates the impact of tariff changes on bilateral trade for 5,020 products in a partial equilibrium framework....