42 U.S.C. § 1991 — Fees; persons appointed to execute process

Every person appointed to execute process under section 1989 of this title shall be entitled to a fee of $5 for each party he may arrest and take before any United States magistrate judge, with such other fees as may be deemed reasonable by the magistrate judge for any additional services necessarily performed by him, such as attending at the examination, keeping the prisoner in custody, and providing him with food and lodging during his detention, and until the final determination of the magistrate judge; such fees to be made up in conformity with the fees usually charged by the officers of the courts of justice within the proper district or county, as near as may be practicable, and paid out of the Treasury of the United States on the certificate of the judge of the district within which the arrest is made, and to be recoverable from the defendant as part of the judgment in case of conviction.