What Trump says: If Democrats play tough I will declassify “devastating documents.”— Adam Schiff (@RepAdamSchiff) November 29, 2018
What he means: If Democrats do legitimate oversight I will burn sources and allies by selectively declassifying info so my legal team can misrepresent it to the public.
Why he’s doing it: Fear.
Wow! Presumably, documents are classified because the government has decided they contain sensitive information related to national security. So do we now selectively declassify information to punish political opponents? This threat alone reveals so much about Trump's moral compass, his priorities, a propensity for abuse of power and, more fundamentally, his fitness to serve as president.