Two months ahead of the 2024 presidential race, right-wing Fox News and its sister channel Fox Business are trying out a variety of attacks against Democratic nominee Kamala Harris and her running mate, Minnesota Gov. Tim Walz. The Guardian’s Margaret Sullivan examines some of those lines of attack in a column published on September 6, arguing that they are falling flat and making Fox News appear “a little desperate.” “Watching Fox News these days is like being at open-mic night at a marginal comedy club,” Sullivan observes. “Right-wing pundits, like a lineup of amateur comics, are trying out …