(1) When the United States obtains a criminal conviction and the Attorney General determines that the conviction was based in whole or in part on the information contained in a valid declaration filed under section
4201 of this title the Attorney General may, in his discretion, pay a reward to the declarant
(2) In determining the size of any award under paragraph (1), the Attorney General may, in the Attorney Generals discretion, consider any appropriate factor, including
(A) the seriousness of the offense for which the conviction was obtained;
(B) the extent to which the facts alleged in the declaration contributed to the conviction;
(C) the number of offenders apprehended pursuant to information provided by the declarant;
(D) whether or not the offender was previously under investigation by any law enforcement agency when the declaration was filed;
(E) the extent to which the declarant cooperated in the development of the Governments case and its presentation at trial;
(F) the sentences and fines imposed on the offender and other offenders in related cases;
(G) the extent to which other sources of private information were relied upon; and
(H) the hardship to the declarant and any expenses the declarant incurred in preparing the declaration.