A Smithsonian Institution sign is seen on the National Air and Space Museum on the National Mall in Washington, DC. At least one Smithsonian museum has already made moves to correct public-facing content. Earlier this month, its National Museum of American History removed references to Trump’s two first-term impeachments from an exhibit following a review. President Trump said he fired a Smithsonian museum director. Last month, he claimed he was firing the director of the Smithsonian’s National Portrait Gallery.