The Times claims that it got the documents from a person “with legal access” to them, a person who then turned the tax returns over to the Times. If that’s true, then maybe a great bloody big investigation would be in order—to find the person who coughed up the documents to the Fourth Estate, and to discover how many laws she violated when she did the coughing.
Fortunately, however, Dear Leader has roundly assured us that the documents are bogus, and that the Times just created them out of whole cloth.
That being the case, no need to investigate.
If no one robbed the bank, there’s no need to go looking for the bank robber.