LOUISVILLE — Using Kentucky as a stage, a string of high-profile speakers at the National Rifle Association's 137th annual meeting painted the 2008 presidential race as a showdown over the right to bear arms. But the fall election also could prove to be a key test of the NRA's political muscle. The group focused much of its meeting this weekend on gearing up its members, especially the 60,000 who traveled to Louisville, to defeat the Democratic nominee in November,... (GunPolicy.org)