The Smithsonian said that it would update an exhibit at the National Museum of American History to reflect all impeachment proceedings in U.S. history after a placard was removed last month.

The Smithsonian removed references to President Trump's two impeachments from an exhibit on "Limits of Presidential Power," a Smithsonian spokesperson confirmed.

In a statement to CNN Thursday, The Smithsonian said the decision was made after a review of the museum’s “legacy content” this year.