Right, because Trump's never had frivolous lawsuits against news organizations thrown out before. Oh wait.
http://www.thedailybeast.com/articles/2015/07/06/trump-sued-everyone-but-his-hairdresser.html
In 1984, Trump sued the Chicago Tribune for $500 million after the publication’s architecture critic, Paul Gapp, wrote an item suggesting Chicago’s Sears Tower, then the world’s tallest building, would remain as such, despite Trump’s plan to build a taller structure in downtown Manhattan. Trump claimed the story “virtually torpedoed” his dreams, according to the Associated Press, by depicting his would-be tower as “an atrocious, ugly monstrosity” even though, Trump said, he hadn’t even yet hired an architect or drawn a plan.
In 2006, Trump sued New York Times reporter Timothy L. O’Brien, author of TrumpNation: The Art of Being the Donald, as well as the book’s publisher, Warner Books, for saying Trump is worth $150 million to $250 million when Trump claimed, at the time, he was worth $2.7 billion. Trump said the error was “egregiously false,” according to Agence France Presse.
In 2009, the suit was dismissed. Trump now claims he’s worth “$8,737,540,000.”
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He sued because of something he "didn't like." The cases were thrown out because they were ridiculous.