Step Aside for Powell and Pelosi

America’s catastrophically inadequate response to the coronavirus can be attributed largely to bad short-term decisions by one man. And I do mean short-term: At every stage, Donald Trump minimized the threat and blocked helpful action because he wanted to look good for the next news cycle or two, ignoring and intimidating anyone who tried to give him good advice.

But here’s the thing: Even if he weren’t so irresponsibly self-centered, he has denuded the government of people who could be giving good advice in the first place.

Trump disbanded the...