President Donald Trump renewed his threat to bar Canadian aircraft maker Bombardier from selling jets in the United States unless it builds aircraft domestically, linking the proposed restriction to Canada’s treatment of General Dynamics-owned Gulfstream Aerospace. The escalation has placed vulnerable Republican Senate candidates in Kansas, Maine and potentially Michigan between defending the administration’s economic record and opposing measures that could affect local employers, consumers and trade-dependent industries. Kansas Senator Roger Marshall said he had raised concerns about Bombardier inside the Oval Office and would fight to preserve more than 1,200 Kansas jobs. He also endorsed the broader goal of bringing manufacturing to Wichita, arguing that the United States buys more than half of Bombardier’s output. Senator Jerry Moran separately warned that Bombardier’s Wichita operations support more than 1,000 employees and contribute to U.S. defense and aerospace capabilities. The company’s stock fell more than 2% after Trump said Bombardier would lose access to U.S. buyers unless it builds planes in the country and stops treating America like a piggybank. Bombardier employs about 3,500 people in the United States, including roughly 1,500 in Kansas, and says it works with more than 2,800 suppliers across 47 states. The dispute comes as Marshall faces a competitive reelection campaign. A Global Strategy Group poll of 800 likely Kansas voters conducted Aug. 12-16 showed Democratic challenger Adam Hamilton leading 44% to 43%, although the nonpartisan Cook Political Report still rates the state as a likely Republican win. Trade tensions have also given Democratic challenger Troy Jackson an issue against Maine Senator Susan Collins, while analysts and strategists say the conflict could affect other closely contested races.