Trump on Obama's Real Mother

Donald Trump on Ann Dunham, supposed mother of Barack Obama:

 "Not only is Barack Obama's so-called birth certificate a forgery, but so is the birth certificate of his mother, Ann Dunham. It has to be--if Obama's mother was a citizen, then so is he. That's the law, as some interpret it, but they aren't as smart as I am. I've been told that Ann Dunham was the daughter of Stanley and Madelyn Dunham, but have I seen their birth certificates? Obama has kept them hidden. And if they had American birth certificates, which I don't believe, how do we know that the certificates weren't forged as part of the plot that made their black grandson President? Many opportunists have forged birth certificates for their grandparents in order to make themselves American citizens. It's commonplace. And how can we be certain that Ann Dunham even was Barack Obama's mother? He's on record as calling other women mother, including his comments in a letter written while in high school about someone who might be his real mother, Moma Cass, recently identified tentatively as a woman of Liu ethnicity in Nyamaza Province, Kenya. Wake up, ABC! Why be just another wing of the Democrat Party? Get the truth out while our country can still be saved."