The appointment was later criticized by some historians, who have noted that Kennedy had fired him, and he was therefore unlikely to be impartial in passing the judgments charged to the Warren Commission.
Numirea a fost ulterior criticată de unii istorici, care au remarcat faptul că Kennedy l-a concediat și era, prin urmare, puțin probabil ca el să fie imparțial în adoptarea hotărârilor Comisiei Warren.