...party or parties in which the United States is a party or has a direct and substantial interest and in which he participated personally and substantially...or otherwise, while so employed, or "(b) Whoever, having been so emploved, within one year after his employment has ceased, appears personally before...

...has a direct and substantial interest and in which he participated personally and substantially us an officer or employee, through decision, approval,...or otherwise, while so employed, or "(b) Whoever, having been so employed, within one year after his employment has ceased, appears personally before...

...claim, controversy, investigation, charge, accusation, arrest, or other particular matter in which the United States or the District of Columbia is a party or has a direct and substantial interest and in which such officer or employee or special Government employee participates...

...charge, accusation. arrest, or other particular matter involving a specific party or parties In which the United States or the District of Columbia is a party...investigation or otherwise, while so employed: or (b) Whoever, (1) having been so employed, within two years after his employment has ceased, knowingly acts as agent...

...in which the United States or the District of Colum40 CFR Ch. I (7-1-91 Edition) bia is a party or has a direct and substantial Interest, and (3) In...investigation or otherwise, while so employed: or (b) Whoever, (1) having been so employed, within two years after his employment has ceased, knowingly acts as agent...

...party or parties in which the United States is a party or has a direct and substantial Interest and In which he participated personally and substantially...Investigation, or otherwise, while so employed, or (b) Whoever, having been so employed, within 1 year after his employment has ceased, appears personally before any...

...charge, accusation, arrest, or other particular matter involving a specific party or parties in which the United States or the District of Columbia is a party...he participated personally and substantially as an employee through decision, approval, disapproval, recommendation, the rendering of advice, investigation...

...charge, accusation, arrest, or other particular matter involving a specific party or parties in which the United States or the District of Columbia is a party...he participated personally and substantially as an employee through decision, approval, disapproval, recommendation, the rendering of advice, investigation...

...charge, accusation, arrest, or other particular matter involving a specific party or parties in which the United States or the District of Columbia is a party...direct and substantial interest, and (3) in which such member, officer, employee, or special Government employee, participated personally and substantially...

...charge, accusation, arrest, or other particular matter involving a specific party or parties in which the United States or the District of Columbia is a party...direct and substantial interest, and (3) in which such member, officer, employee, or special Government employee, participated personally and substantially...