A top House Republican investigator has accused the Treasury Department of hiding information that could be damaging to Hunter Biden and is investigating if it is being done to protect President Joe Biden.

Rep. James Comer (R-KY), the ranking member on the House Oversight and Reform Committee, sent letters to Treasury Secretary Janet Yellen in May and June and argued that the Treasury Department’s new response continued to stonewall his efforts to get answers on Hunter Biden’s financial transactions linked to China, Russia, and elsewhere.

“It’s unacceptable that the Treasury Department continues to run cover for the Biden family and possibly hide information about whether Joe Biden benefited financially from his family’s business transactions,” he wrote over the weekend. “The Biden Administration changed the rules to severely restrict Congress’ access to suspicious activity reports in the dark of night and with no explanation.”

The Republican added: “Hunter Biden and other Biden family members have racked up at least 150 suspicious activity reports for their shady foreign business deals. We need more information about these transactions and if Joe Biden has benefited financially from his family’s dealings with foreign adversaries.”