NEW YORK/OTTAWA – Trade tensions between the United States and Canada escalated Tuesday as US President Donald Trump announced new import bans and tariff adjustments on Canadian products.

Trump signed five proclamations under Section 338 of the Tariff Act of 1930, banning imports of certain Canadian alcoholic beverages, dairy and other products previously subject to 50-percent tariffs. The import bans will take effect on Sept 29.

The measures also revise the scope of tariffs announced on July 20, removing products including rock salt and cement while adding others such as all-terrain vehicles and additional dairy products. The changes will take effect on Sept 15.

The Section 338 tariffs apply to covered Canadian goods regardless of whether they qualify for preferential treatment under the US-Mexico-Canada Agreement, and are imposed in addition to tariffs under Section 232 of the Trade Expansion Act of 1962.

ALSO READ: Trump threatens to bar Canadian Bombardier jets in US

Earlier Tuesday, Trump also directed the US Trade Representative and the General Services Administration (GSA) to remove $50 billion worth of Canadian-origin products from the GSA's Multiple Award Schedules.

Canada is assessing the latest US measures, Canadian minister responsible for Canada-US trade Dominic LeBlanc said Tuesday, stressing that the government's priority remains protecting Canadian workers, farmers, families and businesses.

Canadian Prime Minister Mark Carney said the country would focus on building strength at home and diversifying partnerships abroad. His government's plans include developing new ports, mines and major energy infrastructure, as well as pursuing more than 20 new trade and defense agreements across five continents.

READ MORE: Canada announces counter-tariffs on over 700 US goods

Trump imposed 50-percent tariffs on about $20 billion worth of Canadian goods on Aug 22, prompting Canada to retaliate with tariffs on an equivalent value of US imports, which took effect Tuesday.

The Canadian government is scheduled to hold a cabinet retreat in Banff, Alberta, on Sept 10-11 to review policy plans and receive analysis from experts in economics and international affairs.