Alaska is both the Westernmost and Easternmost point of the United States. Alaska has an uninhabited Aleutian Island called Semisopochnoi which sits just 10 miles east of the 180th meridian. – WTF Fun Facts
Source: https://www.cntraveler.com/stories/2012-07-30/semisopochnoi-island-alaska-maphead-ken-jennings
WTF Fun Fact – Westernmost & Easternmost
The island is 10 miles WEST of the Date Line which puts it 4,673 miles northeast of the most Eastern point in Maine (West Quoddy Head).