In 1953, the CIA was reportedly involved in the overthrow of Mohammad Mosaddeq, the premier of Iran. From my admittedly limited understanding of he situation, the US government wanted a pro-western government in Iran (that of the Shaw) rather than one sympathetic to the neighboring Soviet Union.
In other words, Jimmy Carter had little responsibility for a situation which actually began in 1953.
I don’t consider myself to be as knowledgeable and erudite on this matter as I’d like to be but I’d say you’d find others who might not necessarily agree.