The conservative legal movement in the United States is more powerful than ever. One largely unknown man has played a significant role in pushing the American judiciary to the right: Leonard Leo.

This is “We Don’t Talk About Leonard,” a podcast series with WNYC’s “On The Media” that explores the web of money, influence and power behind the conservative takeover of America’s courts — and the man at the center of it all: Leonard Leo.

Historians and legal experts say there is no comparable figure in American jurisprudence. To the extent Leo is known, it’s for his role helping to install the conservative supermajority on the U.S. Supreme Court. But his reach extends far beyond that. Decades ago, he realized it was not enough to have justices on his side. Those jurists needed to decide the right cases, brought by the right lawyers and heard by the right lower court judges. He built a machine to do just that.