And I suppose that the mosquitoes are biting only citizens in order to become Dengue-carrying mosquitoes.
If mosquitoes bite someone without Dengue, they're annoying but not terribly significant when they later bite you. If mosquitoes bite illegals who have Dengue (Look at the map.), the results are far different.
????????
Illegal immigrants have nothing to do with it, and neither does climate change. Not even George Bush has anything to do with it!
In my opinion, the outlawing of DDT has everything to do with it.