They didn’t endorse or campaign for Biden. The “Against Trump” issue came out in January 2016 when a lot of people were still skeptical about Trump and assumed he wasn’t a serious candidate.
Bull.
Right.
National Review Oct 2020: Hell No! The Case Against Trump
To balance this, they had another essay to reflect the "pro" side of Donald Trump. It begins like this: "I know what I think of Donald Trump. I think that he’s a shallow, ignorant, capricious, incorrigible, self-destructive fool."
They were NOT neutral in 2020.