Changes at the Smithsonian, a longstanding American institution, have both staffers and historians concerned, according to new reports. Here’s a timeline of what has been going on.

Donald Trump's administration is conducting a review of the Smithsonian Institution, starting with the Museum of African American History and others.

The White House is conducting a comprehensive internal review of exhibits and materials at the Smithsonian Institution in an effort to comply with President Donald Trump’s directive about what should and shouldn’t be displayed.