(T.J. Kirkpatrick | The New York Times) President Joe Biden waits to speak at an event promoting the benefits of the Inflation Reduction Act at Irvine Valley College in Irvine, Calif., on Oct. 14, 2022. The burdens of the midterms have been heavier for Democrats than they needed to be because of three notable failures, three specific courses that his White House set, writes Ross Douthat.