Public Corruption Prosecution Improvements Act - Amends the federal criminal code to: (1) establish a six-year limitation period for the prosecution of certain public corruption crimes, including bribery, theft of government property, mail fraud, and racketeering; (2) expand the penalties for theft or bribery involving programs receiving federal funds; (3) expand the prohibition against theft of public money or property to include thefts in the District of Columbia; (4) include certain government theft and bribery offenses as predicates for racketeering and money laundering prosecutions and wiretaps; and (5) expand the definition of "official act" for purposes of the crime of bribery of public officials and witnesses.
Authorizes appropriations for additional Department of Justice (DOJ) personnel to investigate and prosecute public corruption offenses.