It was a major upset, a clear sign that the G20 had fully evolved from a forum of international cooperation into a high-stakes, hyper-commercialized event, with one man now holding all the cards.…. The news hit the G20 secretariat like a shockwave. President Trump’s Friday announcement that the U.S. would host the next G20 summit at his golf club in Doral, Florida, was an unprecedented move. The G20, a forum built on consensus and diplomatic negotiations, had a well-established (if unwritten) process for selecting its host city. The presidency rotated among member countries, and when it was a country’s turn, various cities would vie for the honor, lobbying the G20’s “sherpas” with lavish presentations, promises of world-class facilities, and, in some cases, less-than-above-board incentives. The competition to host the G20 was a high-stakes game. For a city, it was a guarantee of a massive economic injection. A swarm of world leaders,...