Donald Trump had a big weekend at the G20 summit in Germany, hobnobbing with world leaders and generating another ten thousand embarrassing headlines. One of those stung worse than others. This one: Ivanka Trump sat in for Donald at a G20 world leaders' meeting. And the ones like it on CNN, The Guardian, Politico, and every other site with a sighing editor working weekends.It's obvious why it's controversial: Ivanka Trump is not an elected official. And while the BBC says it's common for a "leader's absence" to be filled in by "high-ranking officials," Ivanka Trump is an advisor. It's questionable.Also questionable is Trump's defense. As natural as it is to blame Chelsea Clinton and Hillary Clinton for your negative headlines...When I left Conference Room for short meetings with Japan and other countries, I asked Ivanka to hold seat. Very standard. Angela M agrees!— Donald J. Trump (@realDonaldTrump) July 10, 2017 If Chelsea Clinton were asked to hold the seat for her mother,as her mother gave our country away, the Fake News would say CHELSEA FOR PRES!— Donald J. Trump (@realDonaldTrump) July 10, 2017 Trump is like a great science fiction writer. In an alternate universe, Hillary Clinton is president. Wow! And in that alternate universe, Hillary Clinton asked her daughter, Chelsea, to sit in for her at the G20. The alt-world media loved it! But in this alternate universe, Trump is a private citizen, and he—apparently—hated it? Even though it's what he just did, in the real world.And then aliens attack New York City.I love Trump's science fiction.(For good measure, Trump also tweeted this about Hillary Clinton, apropos of nothing):https://twitter.com/seanhannity/status/884206205769592832He just needs a better copy editor.