A bill to provide an award of prejudgment interest on claims arising under the laws, treaties, and Constitution of the United States.

Amends the judicial code to add prejudgment interest to the sum of actual damages awarded on a claim arising under Federal laws, treaties, or the Constitution.

Specifies how the prejudgment rate of interest shall be computed and how the time of such interest shall be measured.

Defines conditions under which prejudgment interest shall not be awarded.