It was his poison pill that gave the pro amnesty vote cover to vote against it. That is what a poison pill amendment does.
The Gang-of-Eight bill passed the Senate 68-32 on June 27, 2013. It is my understanding that every amendment offered was defeated. What Ted Cruz is doing is claiming that some of his offered, but defeated amendments, were intended to be poison pills.
Either I'm confused, or some of his followers are confused on this thread. So, please tell us what Cruz "poison pill" amendments were passed and attached to the Gang-of-Eight bill.