The National Hellenic Museum argued that John Gerba’s retaliatory discharge claim was defective under Illinois law — although Count 1 of his amended complaint alleged he was fired for complaining to two supervisors and a member of the museum’s board of directors about the way the museum handled a grant for “information kiosks” from the Illinois Department of Natural Resources, or IDNR, and funds from donors for benches — because he didn’t identify any particular law he thought the …