http://super-economy.blogspot.com/2012/11/what-gop-can-teach...
http://super-economy.blogspot.com/2012/11/why-hispanics-are-...
Whether this particular instance is a good thing or not depends on your perspective (and is really not something to discuss here), but it is important to recognize that immigrants can do a lot of good/bad in the voting booth.
Unfortunately, political externalities are a hugely overlooked aspect of this issue.