Complex sentence: He also charged steep chapter fees without providing charters, and was under investigation by the F.B.I. for a fraudulent'scholarship' program, and was prosecuted for income tax evasion regarding the endowment of his society.
Split into simpler sentences: He also charged steep chapter fees without providing charters, and he was also under investigation by the F.B.I. for a fraudulent'scholarship' program. Later, he was prosecuted for income tax evasion regarding the endowment of his society.