Most jobs in South America require you to be a citizen of the country. There are some exceptions, but for the most part, South America is a closed shop these days. You'd have better luck in Indonesia, Papua New Guinea, or bush flying in Africa. Have a look at Susi Air. LAN Chile has been known to hire foreigners in the past, but you need to speak fluent Spanish and you need to get the Chilean license now. Copa in Panama has hired foreigners in the past, but they are in Central America and you were asking about South America. In the past they required 1000TT, but lately they have been threatening to furlough pilots.

There are some jobs for foreigners in Belize but I think it's mostly P2F. Someone may have better information on that.

Hawaii is not a different country but you could take a look at Mokulele. Star Marianas in Saipan hires low time pilots.