Amends the federal criminal code to increase from one to five years after termination of federal service or employment the period during which former federal employees of the executive branch, Members of Congress, and officers and employees of the legislative branch are prohibited from representing, aiding, or advising a foreign entity with the intent to influence a decision of any officer or employee of a federal department or agency. Expands the definition of "foreign entity" to include the government of a foreign country, a foreign political party, and a partnership, association, corporation, organization, or a combination of such entities, having its principal place of business in a foreign country.