US President Donald Trump posted on Truth Social on 2026-09-03, warning that Canada's economy could 'collapse' and accusing Canadian politicians, including Prime Minister Mark Carney, of making him 'the enemy'. ^[1] Federal Reserve President Kevin Warsh said the central bank will have 'work to do' if monetary authorities do not trust that core inflation is returning to its 2% target, and acknowledged financial conditions do not seem restrictive, coming closer to admitting rate hikes might be needed. ^[2] US President Donald Trump said at a press conference in Washington that he could end trade relations with Mexico and other countries if the Federal Reserve, led by Kevin Warsh, does not lower interest rates. ^[3] US President Donald Trump said on September 3 that the United States will soon resume selling ammunition to its allies. ^[4] Canada vowed to retaliate 'dollar for dollar' with tariffs of 15% to 50% on C$27.6 billion of American products, scheduled to take effect on 2026-09-08. ^[5] Canadian Prime Minister Mark Carney suspended trade talks with the US on 2026-08-21, saying last-minute changes proposed by Washington were 'unfair, uneconomic, and called into question the reliability of any deal'. ^[6] The Trump administration imposed 50% tariffs on approximately C$28 billion (£15bn) of Canadian goods following the breakdown of negotiations. ^[7] Trump said ending the trade relationship with Mexican President Claudia Sheinbaum's administration would save the United States $195 billion a year that it loses in the trade relationship. ^[8] Trump threatened to end trade relations with Canada, which conducts 95% of its trade with the United States, warning it would severely affect Canada's industry. ^[9] Donald Trump criticized US media outlets on Truth Social for 'harping on the fact' that the US has no ammunition. ^[10] Donald Trump noted that the US is producing Munitions at levels never seen before and is stockpiling for any contingency. ^[11] Trump accused the previous Biden administration of delivering hundreds of billions of dollars in munitions to Ukraine and NATO for free, stating he intends to reclaim that money. ^[12]