Complex sentence: The 2002 report to the Monticello Association concluded the evidence was insufficient to establish Jefferson's paternity, and the majority of Association members voted against admitting the Hemings descendants as members of the group.
Split into simpler sentences: The 2002 report to the Monticello Association concluded the evidence was insufficient to establish Jefferson's paternity. The majority of members voted against admitting the Hemings descendants as members of the group.