Apparently Romney's father was born in Mexican and never became an American citizen, although it is not entirely clear.
See South of border, Romney's Mexican roots run deep
"His son George Romney, Mitt's father, would grow up poor in the United States, taunted as "Mexican!" by other kids at school. But he went on to be a legendary auto executive, two-term Michigan governor (Willard Mitt Romney was born in Detroit in 1947), and one-time presidential candidate, losing the 1968 Republican nomination to Richard M. Nixon. At the time, George Romney's eligibility for president was more of an issue than his Mormonism, news archives show. But the potential legal dispute over his Mexican birth was superseded by Nixon's primary victories, and Romney dropped his campaign before the matter could be settled."
One could understand why Mitt Romney would not want to make an issue of Obama's eligibility.
‘One could understand why Mitt Romney would not want to make an issue of Obama’s eligibility.’
One could understand why Gingrich et al should want to make an issue of Mitt’s eligibility issue. If they do they will kill 2 birds (Mitt and obama’s candidacy) with 1 stone!
but they are not so smart after all!