Complex sentence: His connections to another target in the investigation, Tony Rezko, who was indicted in September 2006 and convicted in June 2008, have attracted more attention however; the Obama family purchased a strip of land next to their Chicago house from Rezko's wife.
Split into simpler sentences: His connections to another target in the investigation, Tony Rezko, who was indicted in September 2006 and convicted in June 2008, have attracted more attention, however. The Obama family purchased a strip of land next to their Chicago house from Rezko's wife.