U.S. President Donald Trump said on Thursday the United States would impose a 35% tariff on imports from Canada next month and planned to impose blanket tariffs of 15% or 20% on most other trading partners.

WASHINGTON/OTTAWA, July 10 (Reuters) - U.S. President Donald Trump said on Thursday the United States would impose a 35% tariff on imports from Canada next month and planned to impose blanket tariffs of 15% or 20% on most other trading partners.

The US president adds uncertainty to trade discussions by notifying Prime Minister Carney by letter of an unexpected levy that will take effect on August 1