Maybe I am wrong on this, but my impression is that Mormons just baptize their ancestors, and related clan members. My maternal grandmother great grandparents have been baptized apparently. At least on the LDS genealogical website, someone put up the family tree, which is what one does to research who "needs" to get into the celestial kingdom posthumously.
Anyway, I doubt any of Osama's descendants or other parts of his clan have any LDS members at the moment.
And I have an LDS first cousin once removed (a convert, and now a rather high ranking member of the outfit), so I might get into the celestial kingdom at some point too. But it would be a big mistake to let me in really.