Letter Text (PDF)

Washington (June 2, 2026) – Senator Edward J. Markey (D-Mass.), co-Chair of the bicameral Nuclear Weapons and Arms Control Working Group, today wrote to President Trump urging him to cancel the Department of Energy’s (DOE) plans to give 20 metric tons of weapons-usable plutonium—enough for approximately 2,000 nuclear bombs—to private industry for commercial energy use. If implemented, this would be the first time the U.S. government has made weapons-grade plutonium available to private companies. These plans go against long-standing bipartisan U.S. nuclear security policy, raise serious weapons proliferation concerns, make little economic sense, and raise conflict of interest issues. Secretary of Energy Chris Wright recently served on the Board of Directors of Oklo, one of the companies that may receive plutonium.

In the letter, Senator Markey wrote, “For five decades, the United States has avoided the commercial use of plutonium and opposed the spread of technology to separate (“reprocess”) plutonium from used reactor fuel. We did so to prevent nations with nuclear power plants (such as Iran) from being able to extract plutonium from that fuel, which they—or terrorists into whose hands it could fall—could use to make nuclear weapons.”

Senator Markey continued, “I am concerned that your Administration is moving forward with plans to transfer plutonium to Oklo not because these proposals make sense for the United States, but because Oklo stands to benefit financially and Secretary Wright is acting in his former company’s interest. Secretary Wright’s close ties to the company present an appearance of impropriety.”

In the letter, Senator Markey requested answers by June 15, 2026, to questions that include:

• Why should the U.S. government facilitate the transfer of plutonium to private industry and the development and export of proliferation prone reprocessing technologies?
• What safety and security measures are planned for the transport of weapons-grade plutonium to private actors?
• What role did Secretary Wright play in the selection of Oklo for the Surplus Plutonium Utilization Program?
• Does Secretary Wright currently have a financial stake in Oklo, and does he stand to benefit in any way from Oklo’s role in this program?

On September 23, 2025, Senator Markey wrote to Trump raising concerns about Secretary of Energy Chris Wright’s close relationship with Oklo Inc., a nuclear technology company that suggests a conflict of interest within the Administration that could compromise U.S. national security by providing weapons-usable plutonium to private industry. On September 10, 2025, Senator Markey and Representatives John Garamendi (CA-08) and Don Beyer (VA-08) wrote to President Trump expressing concern over DOE’s plan to transfer at least 20 metric tons of weapons-usable plutonium to private industry for commercial energy use.

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