The Romney campaign has been touting an ad recently that attacks Obama on small business. This has been a common route for the right, which has taken the talking point of “Obamacare crushes small business.” Although that simply isn’t true, it’s proved an effective line of attack for the Romney campaign. The latest attack ad based on this talking point says that Obama is to blame for the death of a well-known barbecue restaurant in Richmond, Virginia. Here’s the ad: