(Washington, DC) -- Democrats are asking a Republican donor to provide an accounting of gifts he's given to Supreme Court Justice Clarence Thomas. Senate Finance Committee Chairman Ron Wyden sent a letter to billionaire Harlan Crow in request of a complete list of gifts given to Thomas and evidence the two complied with federal tax law. Thomas has recently come under scrutiny after a ProPublica report revealed he received luxury trips from Crow for years without disclosing them. ProPublica also reported a company owned by Crow purchased several properties from Thomas and his family. Those purchases were also undisclosed.