U.S. politicians are crying foul as California Merlots, Kentucky bourbons and Tennessee whiskeys​ disappear from Canadian shelves.

Canadians and Americans visiting Niagara Falls, Ont., are voicing both cautious hope and deep skepticism over a looming trade deal between the two countries.

OTTAWA — Canada-U.S. Trade Minister Dominic LeBlanc is scheduled to speak with provincial and territorial trade ministers as well as members of the prime minister's advisory committee on Canada-U.S. relations Friday.

Donald Trump's trade envoy says the administration will not accept any form of retaliation from Canada if the U.S. president follows through on his latest tariff threat. "For us, this is not a trade war. We have domestic supply chains we're trying to protect," U.S. Trade Representative Jamieson Greer told reporters in Des Moines, Iowa, on Friday.