US authorities investigate huge etching of ‘8647’ on National Mall grounds

US federal authorities are investigating what appears to be a massive etching of “8647” into the grass of the National Mall. Live webcam footage from atop the Washington Monument as of Thursday afternoon shows the markings, with a highly visible “8,” along with less visible “6”, “4” and “7”. “86” is frequently used across the restaurant industry to mean stop or get rid of something, while Donald Trump is the 47th president of the US. …