Exactly, as it was done in every modern campaign prior to Obama.
If you say so.
Maybe I'm wrong. Maybe it
is a "benefit of the doubt" thing. I don't think it should be, and I'm disappointed if it is. I'd consider it a serious problem if lax enforcement means unqualified candidates make it to the ballot.
And regardless of the level of enforcement, I think candidates should be prompt and complete when filing their campaign intentions. I also think that candidates should
always be prepared to produce their qualifications in the appropriate venue, if they have not done so already, when asked. I think this should be a fundamental principle of campaign regulation, regardless of how often it's been asked of other candidates, and regardless of who is asking or the motive imputed to them.
If a birther of any stripe wants to see that the candidate they most hate has a valid US birth certificate or equivalent document on file with the election commission, then the candidate's immediate and unqualified answer should be "of course, and here's the commission's confirmation of the same".
"Nobody else ever got asked this question" is not a valid response from any candidate regarding their fundamental eligibility to hold the office they're campaigning for. And now that it's been most certainly asked of Obama, there's no excuse if Cruz is unable or unwilling to answer it.