The 41st president was the last person to occupy the Oval Office whose opponents saw him as fully legitimate.
Since George H. W. Bush’s death, many observers have noted that he embodied a less rancorous, less polarized political era. But underlying that civility was something deeper: Bush was the last person to occupy the Oval Office whose opponents saw him as a fully legitimate president.
https://www.theatlantic.com/ideas/archive/2018/12/bush-race/577150/