An assault on the federal judiciary is an abuse of the president’s constitutional authority. One way dictators take over democracies is by threatening the independence of a nation’s courts. Donald Trump is doing just this. Connect the following dots:1. In January, Trump blasted a federal judge for staying his travel ban. “The opinion of this so-called judge, which essentially takes law-enforcement away from our country, is ridiculous and will be overturned!” he tweeted.