Robert Mueller has given a subpoena Deutsche Bank for Trump's financial records.
Link

The new revelation makes it clear that Mueller and his team are investigating the president’s financial transactions. It is not clear whether Mueller is interested in the bank accounts because they are connected to the Russia probe or if he is investigating another matter.
Considering that the bank has already been fined for a Russian money laundering scheme earlier this year, I am intrigued

Wonder what Donny is going to say about this. Didnt he say something a while back how looking into his finances was a red line or something?