The holiday weekend brought dangerous freezing temperatures across much of the United States, snarling everything from political campaigning to football games and travel. An Arctic blast seeping into the country from Canada caused temperatures to plummet across a vast swath of the country, from the Pacific Northwest into the Rust Belt, the U.S. National Weather Service (NWS) said in its early Sunday bulletin. In Iowa, a powerful blizzard pulled the brakes on the ever-churning political campaigning machine as Republicans vying for the 2024 presidential candidacy canceled events due to the inclement weather.