Former New York City police commissioner Bernard Kerik says he received a tougher sentence because the judge took his case "personally.''
Kerik filed papers in the 2nd Circuit Court of Appeals in Manhattan asking to be resentenced to "preserve the appearance of impartiality.''
Retired federal Judge Stephen Robinson denied the charge. He said he tried at all times to do what was fair and right. He says it was never personal.
Kerik is serving a four-year sentence for tax fraud, lying to the White House and other felonies.