Similarity of NTMs and impact on unit value

Non-tariff measures (NTMs) may lead to a higher regulatory burden on firms that are required to comply with them. The increase in similarity of NTMs applied on their respective imports by the trading partners may reduce this burden as exporting firms are required to comply with them regardless of whether they sell in the domestic market or export to markets applying similar NTMs. I determine the influence of increasing similarity of NTMs applied by the US and its trading partners on the unit value of imports. I split the sample of source countries based on their income-level and find that the influence on unit value is different within the richer and the poorer countries. The robustness checks reinforce the findings that increasing similarity of NTMs applied by trading partners does influence the unit value of imports but does so differently based on the income-level of source countries.