(a) Whoever, in a circumstance described in subsection (b) of this section, knowingly—
falsifies, conceals, or covers up by any trick, scheme, or device any material fact; or
in any matter involving any benefit authorized, transported, transmitted, transferred, disbursed, or paid in connection with a major disaster declaration under section 401 of the Robert T. Stafford Disaster Relief and Emergency Assistance Act (42 U.S.C. 5170) or an emergency declaration under section 501 of the Robert T. Stafford Disaster Relief and Emergency Assistance Act (42 U.S.C. 5191), or in connection with any procurement of property or services related to any emergency or major disaster declaration as a prime contractor with the United States or as a subcontractor or supplier on a contract in which there is a prime contract with the United States, shall be fined under this title, imprisoned not more than 30 years, or both.
(b) A circumstance described in this subsection is any instance where—