The Uranium One investigation was kept so secret that national security has come into question. Ever since Congress learned how tightly Robert Meuller’s F.B.I kept the lid on the Russian bribery and corruption scheme linked directly to Bill and Hillary Clinton, the identity of their prime informant has been held just as secret. In a shocking revelation, Lobbyist William D. Campbell admits it was him.

Campbell agreed to an exclusive interview with Reuters so he could explain how he came to be smack in the middle of the investigation. For years, the Fed’s star witness has been chomping at the bit for a chance to help his country by telling his tale. “I have worked with the Justice Department undercover for several years, and documentation relating to Uranium One and political influence does exist and I have it.”

Campbell verified he is “the informant” identified by the F.B.I. in open court and that he plans to “testify and provide documents to Congress.” He says he knows a lot of interesting things about how the Obama Administration came to approve the sale of Canadian company Uranium One to Russia’s Rosatom in 2010 along with control of uranium mines the company owned in the United States. Rosatom is the Russian state-owned nuclear power company.

When the deal went down, Campbell worked as a lobbyist for Tenex, a Rosatom subsidiary. Campbell has no idea why Vadim Mikerin, the Russian official running U.S. operations for Tenex hired him, because he “had no experience with nuclear fuel sales,” according to the 2016 lawsuit documents. His lack of experience didn’t matter as long as he forked 40 percent of his $50,000-a-month salary back to Mikerin. Not only did he have to worry about losing his contract by quitting, there were “warnings” from the Russians that made him believe he would come to bodily harm unless he played ball.

Campbell thought it over and decided to tell the FBI in 2010. They already had Mikerin under investigation in Maryland for bribery and kickbacks anyway, for at least a year, so they gave their “blessing for him to remain part of the scheme.” Campbell’s lawyer, Victoria Toensing, confirms that “despite Campbell telling the government how corrupt the company was, Rosatom still got permission to buy Uranium One.”

President Trump has repeatedly called for an inquiry into Clinton and the Russian uranium deal and asked the DOJ to lift a gag order on Campbell in the bribery case, allowing him to testify before Congress. The Justice Department “partially lifted” the order, and Campbell is expected to testify soon but the exact date is still up in the air. In a letter to Campbell’s lawyer, Charles Grassley (R-Iowa), chairman of the Senate Judiciary Committee called the expected testimony, “critical to the Committee’s oversight of the Justice Department and its ongoing inquiry into the manner in which the Uranium One sale was approved.”

The Department of Justice also wrote a letter to Congress notifying members the DOJ is “considering appointing a special prosecutor to launch an investigation into Republican allegations of wrongdoing” by Hillary Clinton and other officials of the Obama Administration. The F.B.I. and Justice Department apparently failed to notify anyone of the ongoing investigation. Every day, more and more evidence is making the cover-up seem intentional.

Hillary Clinton represented the State Department in the “nine-agency government Committee on Foreign Investment in the United States that approved the purchase of Uranium One.” The public recently learned that “large donations by people connected to the Uranium One deal made to her family’s foundation,” may have “influenced the State Department’s decision to approve it.”

With Campbell helping authorities on the investigation from the inside, they learned enough to charge and prosecute Vadim Mikerin, for “taking bribes from a shipping company in exchange for contracts to transport Russian uranium into the United States.” He has already pleaded guilty and has been sentenced to prison for four years.

Another conspirator, Boris Rubizhevsky, was convicted this Monday of conspiracy to commit money laundering for his role as middleman in the scheme. During the five years the F.B.I. investigated Mikerin, almost $145 million dollars from Russian companies were funneled into the Clinton Administration. Bill Clinton was paid $500,000 for a single speech.

Even though they had all the evidence they needed in 2009, the Justice Department didn’t file charges for years.

“Many lawmakers back then had serious concerns about the Uranium One deal. Not providing information on a corruption scheme before the Russian uranium deal was approved by U.S. regulators and engage appropriate congressional committees has served to undermine U.S. national security interests by the very people charged with protecting them,” Says Mike Rogers (R-Michigan).