Democratic presidential nominee Kamala Harris has made it clear that she looks forward to debating her GOP rival, Donald Trump, on ABC News on September 10. But Trump is refusing to debate Harris on ABC that day, saying that instead, they should have a debate hosted by Fox News. In a biting opinion column published on August 6 — the day Harris officially announced Minnesota Gov. Tim Walz as her running mate — MSNBC’s Zeeshan Aleem argues that Trump’s debate demands underscore his anxiety over Harris’ campaign and his “fears of embarrassment.” READ MORE: Ex-fundamentalist sounds alarm about pre…