28 U.S.C. § 2678 : US Code - Section 2678: Attorney fees; penalty

Search 28 U.S.C. § 2678 : US Code - Section 2678: Attorney fees; penalty

No attorney shall charge, demand, receive, or collect for
services rendered, fees in excess of 25 per centum of any judgment
rendered pursuant to section 1346(b) of this title or any
settlement made pursuant to section 2677 of this title, or in
excess of 20 per centum of any award, compromise, or settlement
made pursuant to section 2672 of this title.
Any attorney who charges, demands, receives, or collects for
services rendered in connection with such claim any amount in
excess of that allowed under this section, if recovery be had,
shall be fined not more than $2,000 or imprisoned not more than one
year, or both.