The Brian Lehrer Show

Michael Scherer, national political reporter for The Washington Post, talks about the latest in the skirmish between Congress and the White House over subpoenas for information and testimony, and the reports of growing support for starting formal impeachment proceedings among House Democrats.

"We're entering into a legally muddy area", @michaelscherer says of the White House resisting congressional investigations, which is why we're hearing the calls for impeachment get louder.

"The Constitution didn’t define high crimes and misdemeanors... it’s fair to say that obstruction of justice at several points in the past has been used as a high crime," says @michaelscherer.