Here’s the difficulty. We want Congress to exercise oversight when it comes to the activities of our intelligence services, to prevent them from abusing their awesome powers and to maintain public confidence that such abuses — of which there is a long history in this country — aren’t happening once again.

But there comes a point at which legitimate oversight might cross over into something else: An active effort to pervert Congress’ investigative machinery, in the name of exercising fake oversight, into a kind of defensive weapon, one that is employed against legitimate law enforcement activity, to prevent accountability from being meted out and justice from being done.

How do we identify where that line is, and when it has been crossed? And what do we do if and when that happens?

The Post has a blockbuster report today which tells us that President Trump has joined his allies in Congress in “an increasingly aggressive campaign to undercut the Russia investigation by exposing the role of a top-secret FBI source.” ....

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Concise on point summary and analysis of the latest skullduggery out of this White House and fellow congressional Republican enemies of the Constitution and constitutional government.  By Greg Sargent, WaPo today.