The revelation that the National Security Agency is tracking every phone call each American makes, and broadly mining internet data puts President Obama at the center of yet another controversy. He and supporters in the Republican leadership, not Edward Snowden, are making themselves villains. Two sets of issues are central. Do NSA practices strike a reasonable balance between the threats posed by global terrorism and right to privacy? Are these the least intrusive necessary? Are safeguards against abuse adequate? Will Edward Snowden be thrown in jail for revealing classified information under the Espionage Act or other statutes? The president argues...