Most of south America hates America and likes Iran. People of true European mentality are a minority there. And Islam is growing there too. Besides these are states with third world mentality who are not fit to lead.
I don't think they like Iran. Maybe their governments. But I doubt that the governments in Brazil, Argentina, Chile or Colombia like Iran. That they are "not fit to lead" is the reason that movements are easier to start there. They get less attention.
Islam will have a hard case on this country, because:
1.muslims would have to actually work to feed their families (third world mentality) and
2.these are countries with strong christian societies and no interest in multiculturalism.
The US is very hard to take. There is huge interest, billions and billions of dollar involved, Islam can spread quickly because of multicultural mindset and a sufficient social system. Islam will have it harder then in Europe, but I believe that the USA is still an easy prey for Islam in the long run.