From a story on politico.com by Josh Gerstein headlined “Kagan enters fray over Congress’ power to police Supreme Court”:

Justice Elena Kagan on Thursday jumped into the heated debate over ethics at the Supreme Court, arguing that Congress has broad powers to regulate the nation’s highest tribunal despite the recent claim from one of her conservative colleagues that such a step would violate the Constitution’s separation of powers.

Kagan’s comments, at a judicial conference in Portland, came just days after the Senate Judiciary Committee responded to recent ethics controversies around justices’ luxury travel by advancing a bill requiring the court to establish an ethics code and setting up a mechanism that would enforce it.