"The finances of his nonprofit think tank, the National Policy Institute, are a mystery; the organization hasn’t filed a public report since 2013. On Monday, the Los Angeles Times reported that the IRS revoked the institute’s tax-exempt status."
Mother Jones

He himself (along with his mother and sister) is an absentee landlord of a very valuable 5,200 acres of cotton and corn fields in Louisiana.  Richard is a plantation legacy good old boy.