“And what conservative would you say has “proved his or her conservative cred” on those issues?”
I was asking the same question you are asking. Only it was specifically about Trump.
The question came because a Cruz detractor wanted to know “What has Cruz done?” I thought it was fair to ask “What has Trump done”.
Simple, Trump raised the two critical issues of illegal immigration and one-sided trade deals and their impact on the economy to levels never before seen in a presidential campaign. He's the first candidate who had both the guts and the presence to accomplish that.
Me Too Ted had done little more than mealy mouth and flip/flop on those issues prior to Trump's entry, and then he resorted to copying Trump on the issues after Trump entered the race.
The voters know that and their votes, when allowed to vote, say it loud and clear.