Just one of many sources: https://www.bbc.com/news/world-us-canada-45079377

HARRY TRUMAN SHOWED HE TOOK RESPONSIBILITY FOR HIS ACTIONS; HE DID IT WITH A SIMPLE SIGN LIKE THIS; AFTER 20+ DENIALS OF RUSSIAN COLUSSION, PRES. TRUMP ADMITS HIS CAMPAIGN STAFF COLLUDED; PERHAPS THE CURRENT PRESIDENT COULD USE A SIGN LIKE THIS