Mr. Carlson, the far-right podcaster, has promoted Dr. El-Sayed's comments and sharply criticized his Republican rival in a key Senate race. Strategists are scratching their heads.
Internal emails and documents demonstrate the political capture of the institution, including how officials once pursued a plan to unload much of the art collection.
The president's ban of three media outlets from the White House fits a pattern of using the apparatus of government to crack down on his perceived enemies.
Some Democrats said President Trump's ban was an attempt to control the press and distract voters as Republicans face deep challenges in the midterm elections.