The Republican Party is gung-ho for the second coming of former President Barack Obama’s Iran nuclear deal, though this time, reaching similar terms will come at a tremendous cost to American taxpayers.In spite of the GOP’s well-worn insistence on federal frugality, some conservative lawmakers are suddenly in favor of the Trump administration’s reported plan to provide hundreds of billions in reconstructive aid to Iran. In an interview with Fox News Monday, Florida Representative Brian Mast defended the expense on the basis that “we destroyed so much.”“OK, maybe they do end up getting $20 billion, let’s say—we’re still $300 to $500 billion ahead considering we destroyed their Navy, destroyed their Air Force, destroyed all those nuclear facilities I already spoke about, their steel manufacturing, their drone manufacturing,” Mast said.“We destroyed all that, and closed their ports,” he added. “We’re pretty far ahead.”Rep. Brian Mast: "Ok, maybe they do end up getting $20 billion, let's say. Let's say we're still $300 to $500 billion ahead considering we destroyed their navy, destroyed their air force ... "(So American taxpayers paid both to bomb Iran and then for Iran's reconstruction ... ) pic.twitter.com/kYNSNs4zhu— Aaron Rupar (@atrupar) June 15, 2026The White House and Tehran have already signed a peace deal, though the exact specifications of the agreement have not yet been revealed (and are still being hashed out). The final draft reportedly proposes the immediate reopening of the Strait of Hormuz under Iran’s direction, a commitment from the U.S. not to interfere in Iranian affairs, and a reiteration of Iran’s commitment not to produce nuclear weapons, echoing language included in the 2015 Joint Comprehensive Plan of Action, according to a senior Iranian official who spoke with Reuters.The most contentious point of the plan, however, is a reported $300 billion reconstruction fund, as well as billions more in unfrozen Iranian assets and forfeited sanctions—all of which will be bankrolled by U.S. taxpayers.That’s nearly 160 percent of the financial investment that the U.S. has put into Ukraine since Russia attacked it in 2022. That sum hovers around $188 billion, according to the U.S. special inspector general for Operation Atlantic Resolve.