It's worth noting that while Cruz was fighting the Gang of 8 in 2013, Trump was in full amnesty mode meeting with the Dreamers.
That Time Donald Trump Had A Meeting With DREAMers And Said "You Convinced Me"On Immigration
According to "Dreamers" who admit, in an article to Politico, that they deceptively "crashed" the meeting, and then claim, according to the "recollections" of some illegal alien, that Trump "lied to them" about being convinced. Which we do not find out about until they come forward to Buzzfeed two years later.