(CNN) The Justice Department took President Donald Trump's side in an ongoing subpoena fight between the President's private legal team and House Democrats.

The Justice Department is wading into one of the ongoing court battles between Trump as a private citizen and lawmakers, which Trump has so far lost, in an attempt to stop a congressional subpoena for his financial records.

"The House's lack of responsibility is sufficient reason for this Court to declare this subpoena invalid," the Justice Department wrote on Tuesday.

In this case, Trump had sued to stop the House Oversight Committee from subpoenaing the accounting firm Mazars USA for eight years of his personal and business financial records and other documents. He is not represented by the Justice Department in the case.

A federal district judge ruled against the President , rejecting his attempt to block the committee's subpoena and asserting that Congress is well within its authority to investigate the President.

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