In 2019, Bunch became both the first historian and the first African American to serve as Secretary of the Smithsonian Institution. As he prepares to retire, he talks about the museums' mission to protect history, and give America a full picture of itself.
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Trump said the update was being made at the request of the U.S. military.
Sen. John Barrasso, R-Wyo., on Sunday downplayed concerns that Trump may have violated the Constitution Friday when reporters from Politico, MS NOW and CNN were banned from covering the White House.
The two-term Kentucky Governor advises his fellow Democrats to speak like "normal people" and not shy away from progressive politics or religious faith. He discusses his book, "Go and Do Likewise," which teaches how to change minds by winning hearts.
The alerts did not cite a specific threat, but called for Americans to "exercise heightened vigilance."