Cruz won’t have to cross that bridge because he won’t win the nomination.
However it is not fair to voters or other candidates to have a field of candidates including some who are not eligible.
We need to stop people like Roger Calero, who ran for President in 2004 and 2008 from ever being on the ballot. Roger was a socialist who was in the country on a green card. He wasn’t even a citizen.
We need processes in place to check eligibility at the state and at the federal level. But we need definitions of who is eligible before we can put processes in place.
No one ever brought it up before 2014. I blame us all. We loved him as tea party candidate and did not do our homework on him. I cannot find anything posted here about him being born in Canada before primary.
I think states have a process.