held in leased or rented portions of federal premises, and political contributions may be sent to and accepted in United States post office boxes. Most matters that have arisen under Section 607 have involved computer-generated direct mail campaigns in which solicitation letters are inadvertently sent to prohibited areas. Such matters are unlikely to warrant prosecution. Instead, the Criminal Division usually advises the person or entity involved of the existence of the prohibition in Section 607, and requests that the mailing lists be purged of addresses that appear to belong to the federal government. A systematic refusal or failure to comply with formal warnings of this kind can serve as a basis for prosecution. 3. Limitations Based on Federal Programs and Benefits (a) Promise or deprivation of federal employment or other benefit for political activity: 18 U.S.C. §§ 600 and 601 Section 600 makes it unlawful for anyone to promise any employment, position, contract, or other benefit derived in whole or in part from an Act of Congress, as consideration, favor, or reward for past or future political activity, including support for or opposition to any candidate or political party in any election. The statute applies to all candidates – federal, state, and local. Section 601 makes it unlawful for any person knowingly to cause or attempt to cause any other person to make a contribution on behalf of any candidate or political party by depriving or threatening to deprive the other person of employment or benefits made possible in whole or in part by an Act of Congress. The statute defines “contribution” as encompassing anything of value, including services. Like Section 600, it applies to contributions at federal, state, and local levels. Violations of these statutes are one-year misdemeanors. Although in 1976 Congress increased the fines under Sections 600 and 601 from $1,000 to $10,000, fines under these statutes are 107