Whoever, in any matter within the jurisdiction of any department
or agency of the United States knowingly and willfully falsifies,
conceals or covers up by an trick, scheme, or device a material
fact, or makes any false, fictitious or fraudulent statements or
representations, or makes or uses any false writing or document
knowing the same to contain an false, fictitious or fraudulent
statement or entry, shall be fined not more than $10,000 or
imprisoned not more than five years, or both.