30 billion illegal aliens you say....unless Men In Black was real and the existence of Extra-Terristials is fact id love to know how a population of illegal aliens four times that of population of the entire human race has come to reside in the United States ..... joking aside both Cruz and Trump Id say under normal circumstances are unelectable in a GE, they are simply far too right wing and have alienated far too many groups to truly be able to challenge Clinton... against Sanders they stand a much better chance as then it turns truly into a battle of right vs left.
Now that all being said i fear for the United States only in the sense that Trumps campaign reminds me eriely of the Nazi Campaign following the Great Depression; far right wing candidate that isn't with the establishment that is suggesting radical ideas and a return to greatness (No I am not calling Trump Hitler and his supporters the Nazis for the record). Trump scares me enough that as a Canadian if he was elected President Id move to Mars.
Cruz for me is the American Stephen Harper... really loved by his supporters, generally disliked by everyone else and absolutely terrifies anyone on the left wing spectrum of what he'd be like in power.
If i was going to back anyone it would have to be Rubio or Bush