Just as I predicted, not that it was a difficult prediction to make: a judge ruled that Trump is entitled to a special arbiter to examine all of the documents found at Mar El Asshole, essentially giving Trump consideration that no other defendant in such cases has ever received. The ruling takes all of the documents out of the hands of the DOJ, indefinitely, thus choking off the investigation.
The judge was appointed by Trump in 2020.
The DOJ can appeal the decision, but the appeal would be heard before a court that has 6 of 11 Trump judges on it.
It was inevitable, sooner rather than later, that this case would hit a Trumpy judge and go boom. The DOJ must know now that any further progress they make will eventually be crushed by some other Trump lackey in judicial robes.