With special counsel Robert Mueller expected to wind up his work soon, Democrats are launching an investigation to discover why Deutsche Bank was willing to lend the Trump Organization money when other banks wouldn’t and whether Russia was involved.

The German bank, which has been under scrutiny for its role in Russian money laundering, lent Trump hundreds of millions of dollars over the years for his property development ventures.

The House Financial Services and Intelligence Committees have been staffing up for their probes into the bank and Trump’s Russia ties. Democrats on the panels say that with Deutsche Bank they are willing to pursue a key area that Mueller may have avoided — crossing what Trump sees as a “red line” into his personal finances.