Republicans and Democrats sparred over the significance of the tax crimes investigation into Hunter Biden at a House Oversight Committee hearing Wednesday that featured two IRS whistleblowers, with the GOP arguing the president’s son was spared from true justice while Democrats argued he was thoroughly investigated by a team formed under the former president and led by a Trump-appointed attorney.

IRS special agent Joseph Ziegler and his supervisor, Gary Shapley, who investigated Biden, expressed frustration over how U.S. Attorney for Delaware David Weiss and other prosecutors handled the investigation, alleging authorities slow-walked the case and showed preferential treatment to the president’s son. 

The House Ways and Means Committee had previously interviewed the two whistleblowers privately and released transcripts just days after prosecutors reached an agreement for Biden to plead guilty to two charges of willful failure to pay taxes.

The nearly six-hour hearing relayed little information not already covered in the nearly 400 pages of testimony from the two men, with the whistleblowers saying they could not answer questions outside the scope of that testimony.

But the hearing was revelatory about how both sides of the aisle could use that testimony.