Washington D.C. Hosts Historic Auto Race for 250th Anniversary
Racecars will travel up to 185 mph on Pennsylvania Avenue.
IndyCar officials install security measures for the historic event.
National Gallery conducts vibration study to protect landmarks.
Trump administration criticizes Smithsonian for historical claims.
Department of Government Efficiency cuts staff and relocates buildings.
FBI Director Kash Patel plans to close Hoover Building.
America First agenda reshapes Washington through political changes.