There's really very few of those guys in general though, and with the systems that have been in place internationally we're not necessarily the first choice destination for signing them outside of FA.
As far as our current ML roster + DL goes, we do have 2 Dominicans, 3 Canadians (plus whatever you want to call Vladdy), a Mexican, a Japanese, a Puerto Rican, and a Cuban. We have a few potential guys like Orelvis in the minors as well. I don't think the FO really cares where the players come from though, as long as they perform. I'm sure they'd be perfectly happy having an entire team from some little village in Africa if they were great ball players.