Inflation in the US dropped last month to its lowest point since it first began surging more than three years ago, adding to a spate of encouraging economic news in the closing weeks of the presidential race. Consumer prices rose just 2.4% in September from a year earlier, down from 2.5% in August and the smallest annual rise since February 2021, per the AP . Measured from month to month, prices increased 0.2% from August to September, the Labor Department reported Thursday, the same as in the previous month. But excluding volatile food and energy costs,