Rich Lowry: Rosenstein has botched the Mueller investigation

Rod Rosenstein is doing a star turn as principled defender of the law, but he’s performed abysmally as deputy attorney general, and President Donald Trump would be fully justified in firing him.The leaked questions that special counsel Robert Mueller wants to ask Trump in a prospective deposition are, if accurate, a sign that Mueller has spun out of control on Rosenstein’s watch.The questions (drafted by Trump’s legal team after consultations with Mueller’s investigators)