New US Chess Federation President Beatriz Marinello is reported to be back at home in Chile due to a serious illness. Of course you want to be near family in such situations, but being in a country with guaranteed universal medical care doesn't hurt either.
[When I lived in Latin America it often surprised Americans to hear that these supposedly "backwards" countries had things like free universal health care and free university education. Such things are also normal in Europe but are viewed with suspicion by "get what you pay for" Americans. That the corollary is "if you can't pay you get nothing" doesn't bother them until they need it. But we have a nice military.]
Meanwhile, another Chilean has come to the US, if just to visit. GM Ivan Morovic is playing in Kansas along with Karpov and Onischuk. (Karpov won the all-play-all rapid.) Morovic has long been one of the top players in Lat.Am, coming up in the 80's with Cuban Jesus Noguieras and the Brazilian Milos.