Joe Biden is no more or less capable a president than he was two months ago. His staff is no more or less competent.
But suddenly, images of Biden as a feeble septuagenarian atop a mismanaged White House have given way to those of an experienced leader, smiling behind aviator sunglasses, whose battle-tested team has delivered on a range of national priorities. A winning streak does that for you.
It has not happened because of a strategy shift or staff shakeup, though at low points allies wanted him to take those ritual steps. It's been a combination of good luck, skill and persistence by a president and Democratic Party determined to act unilaterally where Republicans wouldn't and strike compromises where Republicans would.