“2. INS makes distinction between a native-born and a natural-born citizen. How do you explain that?”
Barry and his campaign lie all day every day! Back in 2008, Barry was running on the narrative of “the improbable love” between his two parents made possible by the civil rights movement and Selma and other lies. It was crucial for his parents to actually BE married for this romantic narrative to resonate with the black community and liberals, despite the Ayers facilitated admission by Barry in Dreams that he wasn't sure his parents, actually were married.
IMO Barry's campaign decided that it was more valuable for his parents to be married and in love than it was risky for Barry to expose himself to charges that he was not NBC. So far this strategy has worked perfectly.
Yes, INS does make a distinction between native-born and NBC and nothing I have written contradicts that, or shouldn't.
Unfortunately for Barry, his behavior betrays consciousness of guilt that he was NOT born in the USA, and Sheriff Joe Arpaio could yet Barry removed from office if it can be proved that Barry knew he was not born in the USA and hid it.