Sentence:  Whoever , in the United States or elsewhere , pays or offers to pay , or promises to pay , or receives on account of services rendered or to be rendered in connection with any such claim , compensation which , when added to any amount previously paid on account of such services , will exceed the amount of fees so determined by the Commission , shall be guilty of a misdemeanor , and , upon conviction thereof , shall be fined not more than $ 5000 or imprisoned not more than twelve months , or both , and if any such payment shall have been made or granted , the Commission shall take such action as may be <WSD>necessary</WSD> to recover the same , and , in addition thereto , any such person shall forfeit all rights under this title . 
Meaning of the word marked with <WSD> tags:  absolutely essential