That probably is the point, but it's poorly made because the author would rather rely on overblowing the risks from an easily treatable, low-threat disease sure to evoke panic and emotion (the horrific biblical scourge of leprosy) than to cite real evidence supporting his claim. (I might suspect that his real claim is that immigration is bad, based on the shabbiness of this article.)
Funny. I got the idea from the author that unchecked immigration by illegals has consequences that were under control at one time. Now, however, due to the lack of leadership and the pervasive pandering by politicians we are now seeing those consequences come to fruition. That's just me though. It seems as though you think illegal immigrants don't really cause these problems and that the author just doesn't like immigrants.