U.S. Representative Bill Foster (D-IL), Congress’ only PhD physicist, used a Thursday post on X to accuse President Donald Trump of squandering American intelligence capabilities over Iran’s nuclear program while ceding strategic control of the Strait of Hormuz, arguing that more than six months into Trump’s war with Iran the country has less visibility into Tehran’s enriched uranium stockpile than it did before the conflict began.
Foster’s post, published to his official X account on August 6, 2026, laid out a direct before-and-after comparison: prior to the war, the United States maintained surveillance over Iran’s nuclear program and international shipping moved freely through the Strait of Hormuz. Now, he said, American intelligence has no visibility into Iran’s enriched uranium, and Iran itself controls traffic through the strategic waterway. Foster tied both outcomes directly to what he described as Trump’s failure to negotiate, arguing the president’s approach has driven up costs and left the country less secure.
The full text of Foster’s post reads as follows:
“Before Trump started his war in Iran, we had surveillance over Iran’s nuclear program and the Strait of Hormuz had free passage.
Now over 6 months in, we have no eyes on Iran’s enriched uranium and Iran has control of traffic through the strait.
Trump’s failure to negotiate has needlessly driven up costs and made us all less safe.”
The War Foster Is Referencing
The conflict Foster points to began on February 28, 2026, when the United States and Israel launched a joint military operation against Iran that included the assassination of Iranian Supreme Leader Ali Khamenei. Iran responded by closing the Strait of Hormuz to foreign shipping and launching missile and drone strikes against Israel, U.S. military bases in the region, and Gulf states allied with Washington. The Iranian Revolutionary Guard Corps mined portions of the strait, boarded and attacked merchant vessels, and warned that no ships would be permitted passage without Tehran’s approval.
That February 2026 war followed an earlier 12-day conflict in June 2025, in which Israel struck Iranian targets and the United States carried out Operation Midnight Hammer, a bombing campaign against Iranian nuclear facilities at Fordow, Natanz, and Esfahan. It was in the aftermath of that 2025 strike that the International Atomic Energy Agency first lost the ability to inspect Iran’s declared enrichment sites, a gap in oversight that has persisted and deepened through the current war.
Six Months Without Eyes On Iran’s Uranium
Foster’s claim that the U.S. currently has “no eyes” on Iran’s enriched uranium reflects a documented pattern tracked by international nuclear monitors. According to the IAEA’s own reporting, the agency has been unable to verify Iran’s declared stockpile of uranium enriched up to 60 percent purity for close to a year, a lapse the agency has itself characterized as a serious proliferation concern. Tehran is believed to hold enough near-weapons-grade material to produce as many as ten nuclear weapons should it choose to pursue them, though the IAEA has said it has seen no direct evidence of an active weapons-building effort.
IAEA Director General Rafael Grossi said in June 2026 that a memorandum of understanding between Washington and Tehran was expected to restore inspector access to Iran’s enrichment sites, but Iranian officials publicly contradicted that timeline, insisting inspections would only resume after a final settlement was reached. Satellite imagery reviewed by the agency has shown continued vehicle activity around an underground tunnel complex at Iran’s Isfahan facility, where much of the country’s highly enriched uranium is believed to be stored, without inspectors able to confirm what is happening inside.
Iran’s Growing Leverage Over The Strait Of Hormuz
Foster’s second claim, that Iran now controls traffic through the Strait of Hormuz, has also gained fresh support from reporting published the same day as his post. Reuters reported on August 6, 2026, that a proposed deal being negotiated between Iran and Oman to end the war would give Tehran authority over which ships are permitted to enter the Gulf through the strait, a concession regional and Iranian sources described as one of the most significant Iran has secured in the conflict. U.S. officials have previously said they would never accept Iranian control over the world’s most important energy shipping corridor, though no official American response to the emerging proposal had been issued as of Foster’s post.
The strait’s status has fluctuated throughout the war. Iran closed it to normal commercial traffic on February 28, 2026, before a ceasefire and a mid-June memorandum of understanding briefly reopened it toll-free. That arrangement collapsed in early July after renewed attacks on commercial vessels, and shipping data tracked by the IMF’s PortWatch program showed daily transits running at roughly 10 vessels as of late July, compared with a pre-war baseline of 88 to 130 vessels per day. The disruption has been accompanied by a broader maritime toll, including damaged and abandoned merchant ships, captured vessels, and multiple deaths among seafarers and port workers across the region.
Foster’s Long-Running Case Against Trump’s Iran Strategy
Thursday’s post is the latest in a string of statements Foster has issued on Iran policy dating back to Trump’s 2018 withdrawal from the Obama-era Joint Comprehensive Plan of Action. Foster has repeatedly argued that the U.S. exit from that agreement, not Iran’s subsequent enrichment activity alone, created the current crisis. In a statement issued after the war’s opening strikes, Foster said the country found itself in this position because of Trump’s decision to abandon the nuclear deal during his first term, arguing that the agreement’s inspection framework had given the U.S. and its allies roughly a year of warning time before Iran could produce weapons-grade material, a buffer he said no longer exists.
Foster has also pressed the administration on process grounds, arguing that Trump moved forward with military action without first securing the congressional authorization he says the Constitution requires. Following a classified briefing on the war, Foster wrote on X that he had heard nothing about a plan to meaningfully address Iran’s nuclear stockpile, calling the absence of such a plan evidence of what he described as the administration’s incompetence.
Voting Record And Congressional Pressure
Foster’s criticism has extended into his voting record. In March 2026, he voted against a Department of Homeland Security funding bill he said Republicans were using as a vehicle to fund immigration enforcement without reform, while separately voting in favor of a War Powers Resolution aimed at reasserting congressional authority over the conflict. In a statement explaining those votes, Foster said the administration had not made a compelling case to Congress for its actions in Iran and had failed to detail any plan for addressing Tehran’s stockpile of weapons-usable, 60 percent enriched uranium.
Foster has separately called on the administration to secure congressional authorization before further strikes, stressing in earlier remarks the importance of continuous monitoring of Iran’s enriched uranium stockpile and warning that without it, any administration claims of having neutralized the nuclear threat cannot be verified.
A Physicist’s Alternative Path
Beyond criticizing the administration, Foster has positioned himself as offering an alternative. In an interview published by NOTUS in April 2026, Foster argued a negotiated settlement with Iran remained achievable and that the fastest route to one would be returning to the terms under discussion in early June 2025, before the U.S. struck Iran’s nuclear facilities. He said Iran continued to insist that uranium enrichment for civilian purposes was a sovereign right, while the Trump administration was pushing to dismantle the program outright, leaving the two sides at an impasse over that central question.
Foster, who was the only physicist in the room for multiple classified briefings on the war, said he had expected a more substantial technical strategy from the administration’s negotiating team and was surprised at what he characterized as their limited depth on the underlying nuclear issues. The White House rejected that criticism, with spokesperson Anna Kelly crediting Special Envoy Steve Witkoff and Jared Kushner with securing what she called a historic Israel-Hamas peace agreement and arguing the administration’s national security team would only accept a final deal that puts America first.
Where Things Stand
As of Foster’s Thursday post, negotiations between Washington, Tehran, and Omani intermediaries remain unresolved, with Reuters reporting that significant issues are still unsettled even as Trump has publicly suggested a deal reopening the strait is close at hand. Gulf negotiators are reportedly pushing for regional oversight of any ship inspections and for a system in which strait-transit fees remain voluntary rather than mandatory, details that have yet to be finalized.
For Foster, the emerging terms of that potential deal reinforce the argument he has been making since the war’s opening weeks: that the loss of nuclear oversight and the shift in control over the Strait of Hormuz represent a strategic setback for the United States, one he attributes directly to the administration’s handling of both the military conflict and the negotiations meant to end it.