Revenge of the Bitter Gun Owners Last spring, after the U.S. Supreme Court ruled that the Second Amendment guarantees an individual right to arms, Democrats hoped the decision would neutralize the gun issue. Instead the ruling, by inviting debate over which kinds of gun control are constitutional, has made the issue more salient. That's bad news for Barack Obama, who the National Rifle Association says "would be the most anti-gun president in American history." The Democratic nominee pays lip service to Second Amendment rights while calling for "commonsense," "reasonable" restrictions. But Obama's sense of what's reasonable, while common among the left-liberal politicians and activists inside his comfort zone, may seem decidedly unreasonable to the pro-gun voters the NRA is trying to mobilize against him. Since these voters made a decisive difference in the 2000 presidential election and arguably in 2004 as well, this is a threat Obama ignores at his peril. The NRA plans to spend $15 million urging voters in battleground states of the Midwest and Mountain West to "Defend Freedom" and "Defeat Obama." Meanwhile, the Obama campaign is running radio spots in swing states such as Michigan, Ohio, Pennsylvania, and West Virginia that promise "Barack Obama and John McCain will both make sure we keep our guns."....