First of all, not all the birthers agree with each other. Phillip Berg and Orly Taitz don’t for example. The Supreme Court and other courts through it out based on standing. They never ruled that Obama was qualified. None of the discussions that took place in the 1800’s or early 1900’s ever gave Obama or Rubio’s situation a natural born citizen status. Obama’s eligibility became an issue when he was already on the ballot. Arizona wasn’t satisfied with Obama’s qualifications, which led to them passing a bill that would mandate candidates providing their birth certificate, which was vetoed by Gov. Jan Brewer. As far as congressmen, they are politicians.
But, Obama’s BC was an entirely different issue than his parent’s birthplace.