Largest US sting on drug cartel arrests 300-plus OKLAHOMA CITY - In the largest single strike at Mexican drug operations in the U.S., authorities arrested more than 300 people in a sting that demonstrates an upstart cartel's vast reach north of the border. Big chill clamps down on upper Midwest CHICAGO - Forecasters say temperatures in the upper Midwest could be the coldest in years Friday as chilly Arctic air keeps spilling south from Canada. Bone-chilling temperatures settle over East MONTPELIER, Vt. - Northeasterners got socked Thursday with the same subzero temperatures -- more than 30 below zero in some spots -- that brought teeth-chattering misery to the nation's midsection for much of the week.