Craig Lord, The Canadian Press

A new poll suggests the trade war with the United States is now the biggest source of political anxiety for Canadians, knocking inflation out of the top spot.

Leger's new poll, released Wednesday, says that 28 per cent of Canadians believe dealing with President Donald Trump's tariffs and U.S. aggression is the most important challenge facing Canada today.

The cost of living dropped to second place in the latest polling; 21 per cent of Canadians ranked it at their top concern, followed by health care and housing affordability.

Canada's industry minister is looking to block what he calls "predatory investment behaviour" as a trade war with the United States continues.

François-Philippe Champagne warned Wednesday that Canadian businesses could be at risk due to the sweeping tariffs imposed by U.S. President Donald Trump.

"As a result of the rapidly shifting trade environment, some Canadian businesses could see their valuations decline, making them susceptible to opportunistic or predatory investment behaviour by non-Canadians," he said in a statement posted to the social media platform X.

Former prime minister Stephen Harper is taking shots at Liberal leadership front-runner Mark Carney's economic record days before the party gathers to choose its next leader.

In his bid to win the Liberal leadership, Carney has campaigned on his economic record as governor of both the Bank of Canada and later the Bank of England.

His campaign website says Carney "guided Canada through one of the most turbulent economic periods in modern history, protecting jobs and helping ensure that Canada came out stronger."