The consulting firm led by Leonard Leo , the architect of the Supreme Court ’s conservative supermajority, has worked for billionaire Charles Koch’s political advocacy network and a dark money group that is currently arguing a Supreme Court case designed to preempt a wealth tax, according to documents obtained by Rolling Stone . The firm even worked to promote a book by Donald Trump cronies Corey Lewandowski and David Bossie. Leo has played a central role in shifting the high court and its