“Why has Trump made no serious effort to declassify and release ANY documents that relate to political corruption in the DOJ, the FBI, and the Intelligence agencies?”
Because Rotten Rod has told Trump that Mueller will consider that obstruction of justice and add it to the long laundry list of crimes that he’s going to present to the new congress.
IOW, The DOJ is not only running a coup against the POTUS, they’re blackmailing him, too.
Trump nominated Rosenstein, and Trump interviewed Mueller for the FBI Director job.
If they are now persecuting and blackmailing him, he has only himself to blame.
In any event, Trump has the Constitutional and statutory authority to declassify and publicly release any document in the Executive branch.
He doesn't have to ask anybody.
He can access every document from his Oval Office computer and post them on the White House web site.
Instead, he does nothing.
If Republicans hold Senate and House, that threat goes away.