President Donald Trump on Friday ordered the National Park Service to install temporary signage near the Smithsonian’s National Museum of American History, warning of what the administration views as “inaccurate information” presented in the institution’s exhibits.

The executive order demands that NPS, which controls the sidewalks outside of several Smithsonian museums along the National Mall, installs signs promoting a White House report that denigrated exhibits at the National Museum of American History.

The order says the signage “shall notify visitors that the Museum exhibits should be renovated consistent with the findings” in the report and directs them to “locations and resources for accurate information” about the country’s history.

It does not describe what those alternate resources should be.

The report, published July 4 by the White House Domestic Policy Council, accused the Smithsonian of advancing “radical,” left-wing ideologies at the museum and “an extreme political activism that seeks to transform our country.”