Trump wrote: "The Smithsonian is OUT OF CONTROL, where everything discussed is how horrible our Country is, how bad Slavery was, and how unaccomplished the downtrodden have been — Nothing about Success, nothing about Brightness, nothing about the Future."

Trump has been trying to exert ideological and curatorial control over the Smithsonian for months, and the White House last week gave the organization 120 days to scrub its museums of "divisive or ideologically driven" content.

The president made the remarks in a social media post amid a White House review of Smithsonian museums and exhibits.