As I noted, Judge Beryl Howell ended her tenure as DC's Chief Judge yesterday decisively, ruling that Evan Corcoran must testify about topics she has found to be crime-fraud excepted.By dint of age and tenure, Howell was appointed Chief Judge just in time to preside over the most remarkable set of investigations against a sitting and former President: the Mueller investigation and certain follow-on investigations, the January 6 investigation, and the stolen documents investigation.