Cruz has defended his support and then non support of TPA very effectively.
http://www.nationalreview.com/corner/420181/cruz-now-no-tpa-andrew-c-mccarthy
Corker: without the Corker bill, Obama would not have had to submit the TREATY ( because that is what it is, even if no one will call it that) at all. The “executive action” you decry is exactly what Corker was meant to prevent. At least with Corker there was some debate. Also, President Cruz now has full legal authority to declare the treaty null and void, as it did not follow Corker or the Constitution.
RUSH:
.... Essentially what the Corker Bill did was reverse the treaty process ..... It was changed by statute. It said that for the Iranian deal, all Obama had to do was get 34 votes. The treaty requires 67. The Corker Bill says he only needs to get 34 votes
Corker: without the Corker bill, Obama would not have had to submit the TREATY ( because that is what it is, even if no one will call it that) at all.
With out a bill he could not have released the money either, which is why they needed one.