Former Attorney General Eric Holder Eric Himpton HolderThe Hill's Campaign Report: Trump's rally risk | Biden ramps up legal team | Biden hits Trump over climate policy Biden campaign forming 'special litigation' team ahead of possible voting battle Pompeo, Engel poised for battle in contempt proceedings MORE slammed the Trump administration at an event for Democrats in Ohio on Friday, accusing the president and Republicans of allowing "rampant corruption" to go on in the Cabinet.

In remarks to Democrats Friday night that were first reported by the Washington Examiner, the Obama-era attorney general accused congressional Republicans of abandoning their duties of oversight over the executive branch.

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"There is rampant corruption within the Trump Cabinet, but a Congress full of Republicans is simply unwilling to conduct oversight or to hold them accountable," Holder said.

Holder didn't go into further detail about his criticism, but his remarks come amid a series of damaging news reports surrounding EPA administrator Scott Pruitt Edward (Scott) Scott PruittJuan Williams: Swamp creature at the White House Science protections must be enforceable Conspicuous by their absence from the Republican Convention MORE, who is accused of living for months in a condo owned in part by the wife of a top energy lobbyist and directing staff to approve raises for longtime aides even after the White House rejected the pay increases.

Pruitt is only the latest Cabinet member to be accused of questionable financial decisions.

In his remarks, Holder also attacked the Trump administration's decision to exit the Paris climate accord, as well as the degradation of NATO alliances.

"Decades old — and effective — alliances have been questioned. The effectiveness of the North Atlantic compact that has ensured peace — and prosperity — for over seventy years, and after the bloodiest century in the history of mankind, is now doubted," he said.

"Our efforts to lead global action to deal with climate change have been abandoned," Holder, 67, added.

The former attorney general is considering a bid to challenge President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE in 2020, and said last month that if he ran it would be because he believed he could "unify the country."

“If I were going to do it, I would do it because I would think I would have concluded that I could maybe unify the country, because it’s bigger than any one person,” Holder told The New York Times in March.

“That I could repair and then advance the nation in a variety of contexts. That I had something to contribute. That would be — I think that would push me toward considering the run,” he continued.