News Trump’s tariff threat over migration prompts sharp response from Mexico: ‘There is a clear limit’ June 3, 2019June 3, 2019 Deirdre Shesgreen, USA TODAY Comments Off on Trump’s tariff threat over migration prompts sharp response from Mexico: ‘There is a clear limit’ Mexican officials are trying to reverse the Trump administration's decision to slap a 5% tariff on imports, in response to the migration crisis.