Trump threatens 35% tariffs on Canadian goodsThe letter to Canada is among more than 20 that Trump had posted this week to US trade partnersTrump has sent more than 20 such letters to other US partners this week. US President Donald Trump has said he will impose a 35% tariff on Canadian goods starting on 1 August, even as the two countries were days away from a self-imposed deadline to reach a new trade deal. Like Canada's letter, Trump has vowed to implement those tariffs by 1 August. These Tariffs may be modified, upward or downward, depending on our relationship with Your Country," Trump said. According to data from the US Customs and Border Patrol, only about 0.2% of all seizures of fentanyl entering the US are made at the Canadian border.