Complex sentence: Peterson, a billionaire investment banker, has long advocated restrictions on entitlement programs and deficit reduction, causing some liberal advocacy groups and analysts to charge that there is an inherent bias in "Fiscal Times" reporting.
Split into simpler sentences: Peterson, a billionaire investment banker, has long advocated restrictions on entitlement programs and deficit reduction. A number of mostly liberal advocacy groups and analysts have charged that there is an inherent bias in "Fiscal Times" reporting.