President Donald Trump used a visit to a General Motors testing facility in Milford, Michigan, on Monday to argue that his tariff policies are forcing a return of automotive production from Mexico, framing the event as a campaign rally one week before the state’s primary elections. Speaking to workers and Republican candidates, Trump claimed that Toyota, Hyundai, and other manufacturers were relocating operations to the United States, and he praised GM for expanding domestic output. The White House said the appearance, which included a drag-race demonstration and a tour of vehicles, was intended to highlight what it calls a manufacturing revival driven by tariffs.

Michigan’s economy, however, is heavily integrated with Canada, and the administration’s new 50 per cent tariffs on a wide range of Canadian goods—including automobiles and parts—are generating unease among state businesses and voters. According to the Bureau of Labor Statistics, Michigan added only 500 jobs in the twelve months to June, and its unemployment rate stood at 5.1 per cent in May, among the highest in the country. Polling by Epic MRA shows Trump’s job approval in the state at 33 per cent, with 61 per cent disapproving, and a majority of voters believe consumers, not foreign countries, bear the cost of tariffs. The president’s visit coincided with the opening of the Gordie Howe International Bridge between Detroit and Windsor, a symbol of cross-border economic ties, even as the trade dispute escalates.

The primary contests have drawn national attention. In the Republican gubernatorial race, Trump has endorsed Representative John James over businessman Perry Johnson, who has styled himself as a Trump-like outsider. The Democratic Senate primary pits moderate Representative Haley Stevens against progressive Abdul El-Sayed, a contest seen as a test of the party’s direction. Trump used his speech to attack Democrats as “communists” and to invite Republican candidates onstage, a move that some Michigan Republican strategists, such as former state party executive director Jason Roe, described as potentially damaging for general-election voters. The event was interrupted by a protester who called Trump a “protector of pedófilo,” a charge the president dismissed.

Viewed from Ottawa, the tariff escalation has hardened Canadian public opinion. An Angus Reid poll found that 62 per cent of Canadians support retaliatory tariffs, and confidence in Prime Minister Mark Carney’s ability to negotiate a good deal has fallen to 43 per cent. In Washington, the White House insists that the tariffs are revitalising American manufacturing, but a YouGov survey indicates that 60 per cent of Americans disapprove of the 50 per cent levies on Canadian goods, and 72 per cent report higher prices as a result. The trade conflict is unfolding alongside the administration’s military campaign against Iran, which has pushed up global oil prices and added to cost-of-living pressures that are expected to dominate the midterm campaign. The Michigan primary on 4 August will provide an early measure of voter sentiment, with the general election set for 3 November.