Mr. Newsom goes to China

Throughout the history of China-U.S. relations, scores of presidents have visited the Great Wall at historically significant moments. And indeed, near the wall, which you reach by gondola, cable cars dedicated to the U.S. presidents line the path. (Newsom snapped a selfie in front of one of them with his business office director and former White House press secretary Dee Dee Myers.) Nixon was the first American president to visit the mainland while in office and his 1972 trip, an eight-day televised public relations extravaganza, helped break several decades of U.S.-PRC isolation and shifted the balance of power in the…