A commanding majority of Americans, 78 percent, want the United States to end its conflict with Iran now, a CBS News/YouGov poll released Sunday found, delivering broad public backing for the memorandum of understanding President Donald Trump signed with Iranian President Masoud Pezeshkian just days earlier.

Only 22 percent of respondents said the country should continue the conflict until Iran gives up more. The survey of 2,519 U.S. adults, conducted June 17, 19, 2026, carried a margin of error of ±2.4 points, tight enough to leave little room for ambiguity about where the country stands.

The numbers matter because they land at a moment when Washington's permanent foreign-policy class and congressional Democrats have spent weeks trying to constrain, slow-walk, or outright block the president's diplomatic authority on Iran. The American public, it turns out, is not with them.

The deal and the data

Trump signed the MOU at the Palace of Versailles on Wednesday, June 17, following the G7 summit. Pezeshkian signed his copy remotely. French President Emmanuel Macron was present at the ceremony. Trump said some details would be finalized over the next 60 days, but the framework was done.

The CBS News/YouGov poll overlapped precisely with the signing, with fieldwork running from June 17 through June 19. The sample was weighted by gender, age, race, education, and 2024 presidential vote using U.S. Census data.

What stands out is the cross-partisan nature of the result. Sixty percent of all Republicans said the nation should end the conflict now. Even among self-identified "MAGA" Republicans, presumably the segment most inclined to support maximum pressure, 56 percent favored ending the conflict immediately. Only 44 percent of that group wanted to press Iran for further concessions.

Those numbers suggest that the deal Trump struck is not just popular in the abstract. It is popular among his own base, where skeptics of any agreement with Tehran might have been expected to hold sway.

Strait of Hormuz and market signals

Trump offered his own assessment of the deal's early returns. He told reporters that the Strait of Hormuz was already partially reopened, with mine-clearing operations underway and full reopening expected by Friday.

"The deal's all signed. And the Strait [of Hormuz] is already partially opened, as you know they're doing a little hunting for a couple of mines that they've already found, but it's essentially ships are starting to go out now; on Friday it will be completely opened."

He also pointed to market movement, saying oil prices were "plummeting down" and the stock market was "shooting up like a rocket, today, like record kind of numbers." Those characterizations are Trump's own; the poll and the source reporting did not independently verify the specific market figures. But the direction he described, cheaper energy and rising equities, tracks with what markets typically do when a major shipping chokepoint reopens.

For ordinary Americans paying for gas and groceries, the Strait of Hormuz is not an abstraction. Roughly a fifth of the world's oil passes through that waterway. Its closure drove prices up. Its reopening should drive them back down. That reality likely shapes the lopsided poll numbers as much as any geopolitical calculation.

The broader diplomatic push continued Sunday, when Vice President JD Vance arrived in Switzerland for the first direct U.S.-Iran talks since the MOU signing. The administration is clearly moving fast to lock in the framework before opposition in Congress or complications on the ground can erode momentum.

Congressional Democrats tried, and failed, to block this

The poll results land with particular force given the legislative battles that preceded the deal. Democrats in both chambers mounted repeated efforts to strip Trump of the authority he used to reach this point.

The Senate defeated a Democrat-led effort to restrict the president's hand on Iran, with Senator John Fetterman of Pennsylvania breaking ranks to side with the administration, a pattern that repeated itself on subsequent votes.

In the House, the dynamic was similar. Democrats failed to peel off a single Republican in their push to invoke war powers restrictions against Trump's Iran strategy. The GOP held firm, and the effort collapsed.

Fetterman's role was especially notable. The Pennsylvania Democrat provided the deciding vote to preserve Trump's authority on Iran, defying his own party's leadership at a moment when the outcome hung on a single senator's conscience.

Trump, for his part, never accepted the premise that Congress could tie his hands. He called the War Powers Act unconstitutional as the 60-day clock expired without a congressional vote, pressing ahead with the diplomatic track that ultimately produced the Versailles MOU.

What the deal covers, and what remains unclear

The specific terms of the memorandum have not been fully disclosed. Trump described it as ending hostilities, with remaining details to be finalized within 60 days. The MOU was signed by both heads of state, Trump in person at Versailles, Pezeshkian remotely, giving it the weight of a bilateral commitment, even if it falls short of a formal treaty.

Trump framed the breakthrough in personal terms, referencing the turnover in Iranian leadership that preceded the agreement.

"We got along very well with Iran. It's a different set of leaders. As you know, the first set is gone, the second set is gone, and we found the third set to be very smart, strong, very smart, but we ended up making a deal. I felt badly that we had to go back on the attack for two nights, and I thought a third, but we made it before that happened."

That comment, acknowledging two nights of military strikes and the contemplation of a third, is a reminder that the diplomatic outcome did not arrive through talk alone. The agreement followed real military pressure, a fact that may explain why it carries more weight with the public than previous rounds of negotiation that produced little.

A separate national survey by the polling firm Quantus, cited by Breitbart News, also found strong majority approval for the preliminary agreement among American voters, though specific figures from that poll were not provided.

The backdrop: Hormuz, Hezbollah, and risk

The deal arrived against a volatile backdrop. Rising tensions over the Strait of Hormuz and renewed fighting between Iran-backed Hezbollah and Israel had threatened to widen the conflict before the MOU was signed. Those risks have not vanished. Mine-clearing in the Strait is still underway. The 60-day finalization window leaves room for setbacks.

But the American public has spoken with unusual clarity. Nearly four in five adults want the conflict ended. Majorities of Republicans, including self-described MAGA voters, agree. The announcement of the U.S.-Iran peace deal and the MOU that followed it have the country's backing in a way that few foreign-policy moves manage.

Open questions remain. What concessions did Iran actually make? What enforcement mechanisms exist if Tehran backtracks? What happens if the 60-day window produces deadlock instead of detail? Those are fair concerns, and the administration will need to answer them.

The bottom line

Democrats spent weeks arguing that Trump was overstepping, that the conflict required more congressional oversight, that the president lacked the authority or the judgment to negotiate with Iran. They lost those votes. And now they are staring at a poll that says 78 percent of Americans, including majorities of the president's own base, want exactly what he delivered.

That does not mean the deal is perfect. It means the public is tired of open-ended conflict and wants results. Trump produced a signed agreement, a partially reopened shipping lane, and falling oil prices. His opponents produced floor speeches.

Washington can debate the fine print for the next 60 days. The country has already made up its mind.