15 of the 19 hijackers who blew up a city block were citizens of our ally, Saudi Barbaria. When the King was confronted over the attacks, he blamed the Israeli Mossad. Iran has never touched American soil, ever. So calling Iran the biggest sponsor of terrorism is gaslighting at best.
[1]https://en.wikipedia.org/wiki/Wahhabism#Funding_factor
[2]https://en.wikipedia.org/wiki/Deobandi#Presence
>Estimates of Saudi spending on religious causes abroad include "upward of $100 billion";[318] between $2 and 3 billion per year since 1975 (compared to the annual Soviet propaganda budget of $1 billion/year);[319] and "at least $87 billion" from 1987–2007.[320]
Whenever the US issues a statement on Iran, it is best to just assume it's total agenda-driven bullshit.