Cook County Assessor Fritz Kaegi has supercharged a new super PAC with a $100,000 infusion, an apparent escalation in his fight against an adversary on the county’s Board of Review. Kaegi personally loaned $100,000 on Jan. 29 to the Stop Tax Corruption Cook County independent expenditure committee, which was registered with the state on Jan 19. An email to the committee went unreturned, but .