 Another case, "Rothenberg v. Daus", contests TLC's practice of revoking taxicab drivers' licenses who are convicted of a crime, including non-violent misdemeanors and even traffic infractions, almost always occurring when the cab driver was off duty.The TLC had succeeded in winning a motion to dismiss, but the Second Circuit Court of Appeals vacated the district court order and reinstated] all of the cabdrivers' claims.Ackman is challenging the legitimacy of the city's administrative law tribunals in two lawsuits pending in the New York federal courts and has led the successful effort to discredit the TLC's charges that a majority of the city's taxi drivers have overcharged passengers.