The recent decisions handed down by the U.S. Supreme Court have only reaffirmed that John Roberts, the Chief Justice, has been assiduously laying the groundwork for two fundamental changes in the American system of self-government that would have been unimaginable during the first 250 years of U.S. history: first, a massive expansion of the powers of the presidency, and second, as if that weren’t bad enough, a judicial push enabling a shift towa…