Indeed, the usual blending referring to "illegal aliens" as immigrants is wrong. To immigrate to another country requires a successfully completed and approved application. This can be one of several types and then the individual can  "immigrate" legally within the boundaries of their approved type, student visa, green card etc. Some types may have a time restriction where application for citizenship if granted does not. Citizenship or new legal citizen means immigrant in the truest sense. Why do folk on the left continue with this schrade? .. they aren't dumb enough to NOT know but they are dumb enough to not get that people get it, that they are blatantly mis-using the term "immigrant". So stop already, use the appropriate terminology, immigrant meaning legal entry or illegal alien, meaning illegal entry.

 As for citizens of Mexico involved in coming to the US, as mentioned in the article...the US Government reports that of the estimated 12 million illegals, 80% are from Mexico.