The United States is banning some Canadian dairy products, most alcoholic beverages and motorcycles, with the ban set to take effect Sept. 29 amid a worsening trade war. Canada’s retaliatory tariffs on $20 billion in U.S. imports took effect Tuesday after trade talks broke down last month. Prime Minister Mark Carney said Canada will push harder on independence and trade diversification.

Canadian Prime Minister Mark Carney speaks at the Alstom Plant in Thunder Bay, Ontario, Canada, Sept. 3, in this photo by The Canadian Press. AP-Yonhap

TORONTO — The United States is banning the import of some dairy products and motorcycles from Canada along with most alcoholic beverages, the White House said Tuesday, as part of a trade war that shows little sign of cooling off.

The ban will take effect Sept. 29 and comes after retaliatory tariffs promised by Canada kicked in earlier Tuesday on $20 billion in U.S. imports. Canada had responded to tariff moves by U.S. President Donald Trump after trade talks between the countries broke down last month.

Trump also moved to shut Canadian products out of large, long-term U.S. government contracts and directed the U.S. General Services Administration to declare Canadian products ineligible for those contracts until Canada allows “full and fair reciprocity″ for American products.