SoftBank gave $50 million to the Donald J. Trump Presidential Library Foundation, Inc. in January. Months later, the company announced plans to lease federal land in Ohio to build what it calls "the world's largest" AI data center. SoftBank revealed the timing of the donation after three members of Congress sent a letter on June 30 raising concerns about possible bribery. The Verge

Politico first reported the donation on May 22, 2026. On June 30, Sen. Elizabeth Warren (D-MA), Sen. Richard Blumenthal (D-CT), and Rep. Melanie Stansbury (D-NM) wrote to SoftBank CEO Masayoshi Son asking him to explain. The letter is publicly available on Warren's Senate website. Warren.senate.gov

The $50 million gift is the largest publicly known donation to the Trump Presidential Library so far. Warren.senate.gov

In March, SoftBank said its SB Energy subsidiary had formed a partnership with the US Department of Energy to build the AI data center at the Portsmouth site in Ohio. Think of a data center as a giant warehouse filled with powerful computers that run artificial intelligence software. These computers use enormous amounts of electricity, so SoftBank also plans to build a gas-fired power plant nearby with a capacity of at least 9.2 gigawatts. That is enough power to light up millions of homes. The Verge

The timing is what caught lawmakers' attention. Warren said in a statement to The Verge that it is hard to believe it is a coincidence that two months after SoftBank donated $50 million to the Trump library, the administration announced a massive lease deal for SoftBank's data center. The Verge

The lawmakers' letter pointed out a difference from past donations. SoftBank had previously given money to the presidential libraries of Ronald Reagan and George W. Bush, but only after those presidents had left office and the libraries were already set up. The Trump donation was made while Trump was still in office and before any library had been built. The Verge

SoftBank says in its response that, as with its earlier donations to presidential libraries, the money will support the construction and operation of the Trump Presidential Library. The Verge

The library fund itself has a confusing history. A group called the Donald J. Trump Presidential Library Fund was dissolved by the state of Florida after it failed to file an annual report. OpenSecrets. SoftBank says its donation went to a different organization, the Donald J. Trump Presidential Library Foundation, Inc. The Verge

Eric Trump, Donald Trump's son, is a trustee of the nonprofit that develops the Trump presidential library, according to Citizens for Ethics. Citizens for Ethics

The broader context here is the intersection of two huge trends in technology: the race to build AI infrastructure, and the political process that decides which companies get access to federal land and energy resources to build it. The Portsmouth deal involves a government site, a partnership between a private company and the government, and a power plant dedicated to a single data center complex. Whoever controls this kind of infrastructure shapes how much AI computing power is available for years to come.

The question the lawmakers are pressing is whether a $50 million donation to a presidential library run by the president's own family, made while the president is in office and months before a federal land deal is announced, was an attempt to win political favor. SoftBank's defense is that it has donated to presidential libraries before. The lawmakers counter that those earlier donations happened under very different conditions, after the presidents had left office.

The stakes go beyond SoftBank. Companies across the technology industry are competing for federal land, energy permits, and government partnerships to build AI data centers. If this deal looks like a political favor, it could undermine the whole model of building AI infrastructure on federal property. If it holds up under scrutiny, other companies will likely follow the same playbook.