This probably isn't directly relevant or maybe it is but farther ahead of the game than we are at this point buuut…. around 2006ish, there was a law enforcement intel memo that came out re: Islamic militants moving to Latin American countries, taking Spanish surnames, learning the language, and blending in with the populations/gaining citizenship or fake papers/etc.

Back then, only being a few years after 9/11, the memo was put out to border state LEO's to look out for illegals who physically appeared Hispanic but may have seemed "off"/had odd accents/carried copies of the Koran/prayer mats/etc etc. Told us to notify DHS/ICE/CBP if anything suspicious. I never found any, don't recall ever hearing about any caught anywhere.

2 months ago, I saw this article on Breitbart:

http://www.breitbart.com/national-security/2018/04/18/experts-iran-hezbollah-radicalized-thousands-latin-americans/

Apparently, Iran and Hezbollah have dispatched Imams to the region to set up mosques.

So I thought, what if, the ones that came over just set up shop in whatever country, married locals, had children, made friends/active in community and had a signal/code word/whatever to give the Imams when they got in country. With no other contact with the muslim world for that long, it seems like they wouldn't be on any watch lists (if the ever were) and would be free to have their buddies over to the house to talk death to America over a beer.

With the DS connection to Iran, could this be somewhere they could hide money/people/stuff? If not now, maybe a future angle if any of them try to regroup?