Do you really think strawman mockery is an effective tactic? Obviously no Foreign country would attempt to draft someone AFTER they became President, but that is not the point. The point is that they COULD be drafted and made to fight against us prior to the fact.
If someone with Dual citizenship was drafted by a foreign Nation, and fought against us, would they be guilty of treason for fighting us? Would they be guilty of Treason if they didn't? Yeah, that body of law is clear as mud.
HOWEVER, someone recently turned me on to this treatise on The Law of Nations. It's by a Swiss guy named Vattel who wrote it in French.
A lot of people attempt to mock the fact that Vattel was Swiss, and that he wrote "Droit des Gens" in French.
Two points.
1. Switzerland was the only REPUBLIC in the world at that time, and Ideas for governing a Republic were not likely to come from a land ruled by a Monarchy.
2. The international language of Diplomacy was French. If you intended a large circulation of your ideas among the movers and shakers of other nations, it was compulsory that you write them in French.
And, if Mexico chooses to not view me as a citizen of Mexico, that's okay, too. I am a citizen of the United States and have never asked Canada or Mexico to view me as a citizen. How those two governments choose to view individuals in this world is beyond my control.
I don't really care if Canada chooses to view Ted Cruz as a citizen or if Mexico chooses not to view Ted Cruz as a citizen. I am not going to let either of those governments manipulate my electoral choices or my vote by anything that those governments do or don't do.
Now, if Ted Cruz is seen to embrace Canadian citizenship (thereby making the relationship a bilateral one) or if Ted Cruz is found to be applying for Mexican citizenship, then either of those facts would probably be deal-breakers for most voters. But that's not what's happening here.
Our nation's eligibility rules and our nation's pool of eligible candidates must be controlled by our nation and by our nation alone. What other nations do or don't do cannot be a relevant factor.
Canada has extended to Cruz a right to citizenship. Unless Cruz responds to that request by accepting or embracing that offer, Canada has no right to draft Cruz or to tax Cruz or to render Cruz ineligible to be our president. He's an American!