Harlan Crow
Texas billionaire and GOP megadonor Harlan Crow is seen here in 2015.
  • Democrats on the Senate Judiciary Committee sent a letter to Harlan Crow on Monday.
  • The letter asks Crow to list any gifts he's given to a Supreme Court justice or their family worth more than $415.
  • The letter follows reporting from ProPublica documenting the many vacations Crow's paid for with Justice Clarence Thomas.

On Monday, the Senate Judiciary Committee asked GOP megadonor Harlan Crow to document the gifts he's given to Supreme Court justices and their families over the years.