Most of the worlds law enforcement and military use 9mm handguns as their sidearms. Why is it that U.S. LE is dominated so much by the 40 cal.? Do we have tougher criminals that need more powerful rounds to bring down or drug addicts that can take rounds to the body like tony montana before they fall? I personally trust anything 9mm and bigger but was just wondering why the world trust 9mm and the U.S. Doesn't.