Yep, Cruz was not naturalized. He was a citizen at birth by virtue of US law consistently the same about the foreign-born children of citizens since the law of 1790.
If it was by US law
then it was under congress's power, if it was under congress's power then it must be naturalization, as this is the only type of citizenship which congress has power over, and if it is naturalization then he is not a natural born citizen.
By citing any normal congressional act you undermine a claim that he is eligible.
Okay, I see we're not done. Go back and carefully read that opinion by the Wong Kim Ark court. It says the exact opposite of what you seem to think it says.
Now you can argue that the Wong Kim Ark court is wrong, or we can start diagramming the sentence to clarify subject verb associations to show that your understanding of what they said is wrong.