Each time President Trump has come close to declassifying the material someone from the DOJ intercepts the anticipated action and blocks the release. In 2018 it was DAG Rod Rosenstein. In 2019 it was AG Bill Barr…. Both motives identical.
Amid the twists and turns many people have forgotten about the material congress asked President Trump to declassify two-years-ago. Additionally there has been some material cited that just seemingly slipped away without follow-up. Consider: https://theconservativetreehouse.com/2020/01/11/has-president-trump-forgotten-the-declassification-material-he-delayed-then-deferred/
"THIMK" 