The former attorney general is calling for a thorough investigation of everyone in the current administration.
Eric Holder believes President Donald Trump should be held to the fire concerning his relations with Russia, even if it's the biggest scandal in modern political history.
"I think we have the makings of potentially a scandal, certainly a controversy, the likes of which we have not seen for many years," Holder told Mic.com in an exclusive interview.
"Exactly what the nature of the contact was between the Trump campaign and people in Russia — be it the intelligence authorities or in the Russian government — I think really needs to be fully explored and to be done in an impartial way, an unbiased way.
"The American people are entitled to know exactly what happened there so that judgments can be made about the roles of various people," he added.
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After Michael Flynn stepped down from his role as national security adviser earlier this week, speculation rose about Trump's ties to the communist nation that are said to go back as far as 2015. In January, President Barack Obama put a sanction against select Russian officials and entities because of evidence of election tampering.
Holder, who served as attorney general under the Obama administration, believes the newly instated AG Jeff Sessions should not be involved in the Russian investigation process. Sessions, who's been a longtime supporter of Trump, has not been tied to any of the Russian controversy, but would certainly not be unbiased.
"I think the investigation needs to be done fairly, I think it needs to be impartial," Holder said. "There are justice department regulations that really handle these kinds of situations so I think the new attorney general needs to look at those regulations, make a determination about the role he played in the campaign, what his degree of knowledge is with regard to these potential interactions between the Russian government and the Trump campaign and then make up his own mind as to whether or not he should recuse himself."