As the White House braces for former F.B.I. director James Comey to testify before Congress this week about his conversations with Donald Trump, there is little that anyone in Washington can talk about besides Russia, Russia, Russia. But not everyone on Capitol Hill is eager for new information to come out—especially when it comes to the president’s potential financial ties to the government whose interference in the 2016 election is at the center of multiple federal investigations.

Last month, several Democrats on the U.S. House Financial Services Committee sent a letter to Deutsche Bank—the financial institution that made loans to Trump when no one else would and recently allowed $10 billion to be laundered out of Russia—requesting the results of an internal review of the president’s accounts, as well as a separate probe into the $10 billion “mirror trading scheme.” The lawmakers asked for a response by Friday. But what they got back from the bank was basically German for “go probe yourself.”

“Deutsche Bank’s outside counsel has confirmed receipt of our May 23, 2017, letter but did not provide substantive responses to our requests,” a Democratic staffer told Reuters. Of particular interest might have been an answer to this prompt: “Congress remains in the dark on whether loans Deutsche Bank made to President Trump were guaranteed by the Russian government, or were in any way connected to Russia. It is critical that you provide this committee with the information necessary to assess the scope, findings and conclusions of your internal reviews.”

The House Financial Services Committee could, of course, simply compel Deutsche to cough up the information by issuing a subpoena. But that would require the cooperation of the Republicans on the committee, who didn’t sign the letter, according to Reuters, and have shown no signs of caring one way or another if Deutsche bank had, just for example, information that Trump was on the hook to Russia.