https://twitter.com/RepRatcliffe/status/1051930769533411328
Hypothetically, declassifying docs related to the Russia probe could reveal evidence that directly contradicts the underlying pretext of the investigation itself: that Papadopoulos had a conversation with an Australian diplomat about getting Clinton's emails from the Russians.
What this could reveal is that the Obama DOJ and FBI, in October of 2016, only presented the FISA court with selective evidence in support of their case to get a warrant to spy on a Trump campaign associate, rather than presenting evidence on both sides of the coin.