Barack Obama has broken racial barriers. But his stint at Columbia was not one of them.
Obama's status as a son of an African immigrant puts him in a category and debate that largely remains behind Ivy League walls: black students from immigrant families are overrepresented in Ivy League schools.
"Immigrant blacks," who come from families who have emigrated from the West Indies or Africa (mostly Ghana or Nigeria), make up 41 percent of the black population of Ivy League...
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