Who is John Roberts?

And when did he change his mind about putting the law above his personal politics?

John Roberts went to Harvard Law. And when he finished, he got a job that would change his life: clerking for Henry Friendly, a highly regarded judge who served on the United States Court of Appeals for the Second Circuit. 

Friendly was revered in legal circles as a genius, and many experts tout him as one of the greatest judges of his era. Friendly was …