i think the feds asked the question after they hauled off the body bags in Miami
And the 40 turned out to be no better than the 9mm, just more recoil. Seriously sometimes the government does screw up when it comes to weapons. Navy went to all missiles saying that guns were outdated, then had to refit guns to their ships. Army went to 5.56 and is now going to a larger caliber because the 5.56 does not have the penetration against common building materials. Now the feds are doing away with the 40 because it offered no real improvement over the 9.