For a hack writer doing a story about Democrats, “four decades” is close enough to 47 years. I wouldn’t make such a big thing over it; it’s OK by her sloppy journalistic standards. Her loyalties are clearly demonstrated by her matter-of-fact description of her Messiah as “the Hawaii-born candidate.”
Why did he leave Kenya 4 months before the other students? There has to be a reason, and that also explains why there is a birth year but no date for Auma. Kezia was pregnant with Auma when he left Kenya; was he in some kind of trouble and got out before he was jailed?