Are presidential fist bumps a sign of distance or closeness? The Biden administration may have thought that by avoiding a handshake with Saudi Crown Prince Mohammed bin Salman, known as MBS, the President could dampen any criticism for meeting the de facto ruler of a nation he once vowed to shun. (The White House had said the fist bumps were an effort to reduce physical contact on his trip to the Middle East, although Biden broke out the handshakes for former Israeli Prime Minister Benjamin Netanyahu and clasped hands with a pair of Holocaust survivors earlier in his trip.)