A reason that I see to keep talking about it is to prepare for the inevitable lawsuits that are to come. More than 200 lawsuits were filed challenging Obama’s eligibility. Preparations are already underway among the hardest of the hard core “birthers” to challenge Senator Cruz and Senator Rubio (and others like Rick Santorum’s Italian immigrant father and Rick’s dual Italian-U.S.citizenship at birth). One of the early Obama eligibility challengers was Commander Charles Kirchner [USN Ret.]. Kirchner v Obama went all the way to the Supreme Court of the United States. Kirchner is going after all candidates not born in the US to two born in the USA parents.
Something tells me they will have more luck in the courts attacking Cruz than they did attacking Obama.