Washington( CNN) A bad day for the White House could turn out to be a good day for justice and democratic accountability and institutions.

Robert Mueller's appointment Wednesday as special attorney to probe Russian election meddling and any collusion by Trump campaign aides elevates the investigation clear of partisanship and the risk of being White House interference.

It therefore may offer the best chance for a politically bulletproof accounting of the remorse or innocence of members of the President's inner circle.

Toobin: Robert Mueller a brilliant choice

Schiff: Comey memo accusations disturbing