(CNN) The Democratic-led House Ways and Means Committee is weighing whether to depose a whistleblower who alleged political interference in the presidential audit program, according to a source familiar with their thinking.

No decisions have been made, according to the source, as the committee is considering how it could affect ongoing litigation for President Donald Trump's tax returns.

While the focus in Washington has been on the whistleblower complaint at the center of the impeachment probe, House Ways and Means staff has been working to verify another whistleblower complaint from the summer that there was political influence exerted over the Presidential audit program.

According to a source familiar with the committee's work, there are ongoing discussions now about whether to bring that individual in for an interview in an executive session of the committee.

Another factor Democrats are weighing is that any deposition would include both Republican and Democratic members who could grill the individual. The original complaint centered around the presidential audit program, which is not enshrined in law, but is a precedent that every President and Vice President's tax returns are audited when they assume office.

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