Obama is a different case. If he was born outside the USA, his mom was not old enough to confer citizenship upon him. And there has been no legal Documentation to date that shows he was born here. Circumstantial evidence shows that he was not.
Why would he have used fraudulent social security numbers his whole life? Why is his selective service form a forgery? Why was he only seen a newborn in Seattle where his mom went to high school, and where in 1960 pregnant girls often stayed in unwed mother homes over the border in Vancouver and gave up their babies for adoption?
And why did Levin never ever mention these things with regard to Obama?
Your second paragraph is chock full of speculation. That Social Security # question is an interesting one since he has used the SS# of a man long dead who was issued his card in CT but lived much of his life in NY. I speculate that the deceased was a comrade in good standing in a party other than the Demonrat one and that the party in question provided this info to Obozo to help him hide while at Columbia University and Bill Ayres and Bernardine Doehrn may have been his handlers in this respect when they were not robbing Brinks trucks or plotting to blow up a USO dance at Fort Dix.
Levin makes no pretense of being some sort of objective reporter any more than does Rush, Hannity or Red Eye Radio hosts. Obozo's issues were not Levin's topic du jour. Hannity mentioned many of these things when Obozo ran the first time but the world and most Republicans seemed totally without interest.