“...actions of the two show who knows the constitution best.”
The Constitution has a treaty clause, and since the Founders regarded treaties as very important, they provided that it would require a two-thirds vote of the Senate to confirm a treaty. Remember, a two-thirds vote to PASS the treaty.
Senator Corker of Tennessee got together with Obama to write a bill that would green light his Iranian deal, which of course is really a treaty since it deals with a foreign power, which is what a treaty does. That bill removed the treaty classification, and it up-ended the Constitution by requiring a two-thirds vote to KILL the bill, rather than a two-thirds vote to pass the bill.
Now, you would think that someone who reveres the Constitution would be repulsed by the reversal of the treaty protection of the Constitution.
Cruz, the modern day incarnation of the Constitution according to his fans, didn’t blink an eye; he voted for the bill.
you are mistaking cruz support to administer a poison amendment to the bill... expected from a trumped up supporter.