Joe Biden's presidency has been compared to Lyndon Baines Johnson’s for its highly significant reshaping of domestic policy. But here’s another comparison which has not been embraced—and should be: the crucial role of Lady Bird Johnson in creating and executing the strategy that resulted in LBJ bowing out after a single elected term.It’s a comparison that our current first lady should study closely, because these next few days may be the most consequential of her life.The parallels between Jill