crimes that use the mails to facilitate fraud against consumers, business, and government. Federal statutes that surround these types of investigations include mail fraud and other criminal statutes when they are tied to the mails, such as bank fraud, identity theft, credit card fraud, wire fraud, and Internet/computer fraud. Mail fraud is a statute that is used in prosecuting many white collar crimes, including, Ponzi schemes, 419 frauds, and other white collar crimes where the mail was used to facilitate the fraud. This extends to public corruption (under the "Honest Services" provision of the federal fraud statutes). In the 1960s and 70s, inspectors under regional chief postal inspectors, such as Martin McGee, known as "Mr. Mail Fraud," exposed and prosecuted numerous swindles involving land sales, phony advertising practices, insurance ripoffs, and fraudulent charitable organizations using mail fraud charges. McGee is credited with assisting in the conviction of former Illinois governor Otto Kerner on mail fraud charges. External Crime and Crime Teams: The External Crimes Function of USPIS is a function that investigates any theft of US mail by non employees, assaults of postal employees, and theft and robberies of postal property. This function also investigates robberies of postal employees and postal facilities, burglaries of postal facilities, and assaults and murders against postal employees. This investigative function focuses on ensuring that the sanctity and trust in the U.S. Mail system is maintained. Prohibited Mailing Investigations: Prohibited mailing investigations are USPIS investigations that focus on the prohibited mailing of contraband including: narcotics, precursors, and proceeds; child pornography and other sexually prohibited materials; and hazardous materials to include: mail bombs; and nuclear, biological, and chemical weapons. The laundering of narcotics and other criminal proceeds through the use of postal money orders is sometimes categorized under this investigative function. Aviation and Homeland Security: USPIS investigations also include the securing and protecting of transportation of US Mail and any risk that might compromise the security of the homeland because of these mails. Security audits are conducted by these teams to ensure that postal service maintains facilities secure from not only theft and robberies but also natural and manmade disasters. Revenue Investigations: USPIS investigates cases where fraudulent practices are conducted by business and consumers that mail items without proper postage or with counterfeit postage and indicia. Also included are other crimes that defraud the USPS of revenue. Recently, however, USPIS has indicated that they have little