Trump hosted steel executives and several Iowa leaders at the White House for the announcement. Iowa Gov. Kim Reynolds thanked the president during the event, according to KCCI.

Mesabi Metallics, a Minnesota company owned by India-based Essar Group, is building the mill. The project is expected to create roughly 6,000 construction jobs and 1,750 permanent jobs once running, with first steel production targeted for 2030.

That's a long runway. Southeast Iowa won't see finished steel for five years. For a state not typically associated with heavy steel manufacturing, landing what's billed as the country's biggest plant marks a shift in where American industry is placing its biggest bets.

Rep. Mariannette Miller-Meeks was also named in connection with the announcement, according to KCCI, though her role wasn't detailed.

The gap between 6,000 temporary construction jobs and 1,750 lasting ones raises an obvious question for Iowa families weighing whether to plan around this project. Will the plant deliver the lasting economic anchor local leaders are counting on, or will most of the benefit fade once the last steel beam goes up.