According to the transcript on the Wall Street Journal's site, Mr. Obama said:
This flow of immigrants has helped make this country stronger and more prosperous. We can point to the genius of Einstein, the designs of I. M. Pei, the stories of Isaac Asimov, the entire industries that were forged by Andrew Carnegie.Not to mention the empty libraries that Andrew Carnegie, with immense foresight, erected to hold the many, many books Isaac Asimov would write.
Anyway, it's nice to see a President dropping the name of one of science fiction's stars. It's almost as if SF had become respectable.