President Trump signs a Proclamation establishing the Oval Office as a National Monument under the Antiquities Act. [▻](https://video.twimg.com/amplify_video/

President Trump signs a Proclamation establishing the Oval Office as a National Monument under the Antiquities Act. [▻](https://video.twimg.com/amplify_video/2118468086894329856/vid/avc1/1280x720/x8P3KNDpEDXyjq5G.mp4) https://video.twimg.com/amplify_video/2118468086894329856/vid/avc1/1280x720/x8P3…