Why is this so super secret?
Shhhh. It is a really dangerous precedent. They do not want you to know. If it took hold, court proceedings could become SECRET and exclude the citizens and media.
Rule 6(e)(5) of the Federal Rules of Criminal Procedure requires the sealing of any court proceedings that would reveal matters pending before an ongoing grand jury. The idea is that, if someone is investigated but ultimately not indicted, their privacy and reputation should be protected.
In fact, a lot is known about this case, just not the identity of the subpoenaed party. Briefs and court opinions which are publicly filed show that: (1) Mueller subpoenaed a corporation [we don't know its name]; (2) that corporation is owned by the government of a foreign country [we don't know which one, but I'd guess Russia]; (3) the corporation claimed it was immune from the subpoena under the Foreign Sovereign Immunities Act; and (4) the courts have rejected that defense.
Unless it involves Top Secret super spy stuff, We the People should have access to it. Anything with private citizen Trump is certainly not eyes only.
What was the secret ruling?
The last time I heard about this reporter’s group it was in this:
FBI admits agent impersonated AP reporter
Fox News / AP ^ | 11-7-2014
FBI Director James Comey says an agent impersonated an Associated Press reporter during a 2007 criminal investigation, a ruse the news organization says could undermine its credibility. In a letter to the Justice Department last week, the AP requested Holder’s word that the DOJ would never again misrepresent itself as the AP ...