Pesky grammar

Hey, kids! Who wants to be first to diagram this headless relative clause from the Washington Times?

Andrew C. McCarthy, a former assistant U.S. attorney who prosecuted Islamic terrorists and a National Review columnist, asked in a recent column how a probe created to explore any Trump-Russia collusion became what amounts to a large federal task force throwing all of its considerable power against one man who worked only briefly for the candidate.

As is so often the case, the grammar that gets you in trouble isn't "bad" grammar; it's perfectly "correct" grammar that's correct about more than one thing.