In the letter Senators Chuck Schumer and Mark Warner and Representatives Nancy Pelosi and Adam Schiff "request" DNI Dan Coats, Deputy AG Rod Rosenstein, and FBI Director Christopher Wray to provide them "an immediate briefing ... prior to any disclosure of the affected material ... to anyone at the White House." Note the essential outrageousness of the "request." The reasoning behind the "request" is based on the assertion that the Special Counsel investigation (i.e., the Russia Hoax) "implicates the President's own campaign and associates." In effect, the claim is that once a Special Counsel is appointed a President is no longer President--at least not for matters related to the Special Counsel's investigation--which we all know can be virtually unlimited. In other words, the Special Counsel act abrogates the US Constitution with its system of checks and balances: agencies of the Executive Branch that report to the President under the US Constitution should now report to Congress!
Key to this reasoning, however, is the assertion in the letter that these three officials--Coats, Rosenstein, and Wray--have already given verbal assurances that such information would not be provided to the White House:
One June 27, 2018, we wrote again to memorialize the verbal assurance you provided us that DoJ and FBI would not provide the White House or any of the President's attorneys with access to sensitive information briefed to a small group of designated Members.That the letter may not actually accurately reflect the "verbal assurances" can be seen from DNI Coats' later (7/12/18) written response in which he agreed that "sources and methods" must be protected. That goes without saying, of course, but who thinks that sources and methods are what are really at issue in this declassification? The terms of the order itself expressly exclude large sections of the Carter Page FISA order--precisely those sections which reference sources and methods (for full details see Andy McCarthy's Reading the FISA Redactions). In any event, as McCarthy also makes abundantly clear, the redacting of the previously released FISA order leave precious little to the imagination--except, perhaps, for those who are deficient in that respect.
What's really at issue here is the release--unredacted--of texts relevant to the Russia Hoax that were sent by two fired former FBI officials: former Director James Comey and former Deputy Director Andy McCabe. Anyone who thinks that Comey and McCabe spent their time texting about sources and methods simply hasn't thought this through. Clearly the Democrats are in a state of near panic, and that suggests that they know that Comey and McCabe were probably texting regarding matters relevant to the Russia Hoax, and those texts were going to members of Congress and/or officials in the Executive Branch--and to the virulently anti-Trump media.