The principal law enforcement reasons for the U.S. State Department to deny or revoke a passport are the existence of (1) a valid federal or state felony arrest warrant; or (2) a criminal court order, condition of parole or condition of probation that forbids departure from the United States (See 22 C.F.R. 51.60-51.62).

SOURCE: http://www.ojp.usdoj.gov/smart/pdfs/passport_fact_sheet.pdf