<Table> Senate Judiciary Committee <Tr> <Th_colspan="2"> Standing committee </Th> </Tr> <Tr> <Td_colspan="2"> Active United States Senate 115th Congress </Td> </Tr> <Tr> <Th_colspan="2"> History </Th> </Tr> <Tr> <Th> Formed </Th> <Td> December 10, 1816 </Td> </Tr> <Tr> <Th_colspan="2"> Leadership </Th> </Tr> <Tr> <Th> Chair </Th> <Td> Chuck Grassley (R) Since January 3, 2015 </Td> </Tr> <Tr> <Th> Ranking member </Th> <Td> Dianne Feinstein (D) Since January 3, 2017 </Td> </Tr> <Tr> <Th_colspan="2"> Structure </Th> </Tr> <Tr> <Th> Seats </Th> <Td> 21 members </Td> </Tr> <Tr> <Th> Political parties </Th> <Td> Majority (11) <Ul> <Li> Republican (11) </Li> </Ul> Minority (10) <Ul> <Li> Democratic (10) </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Jurisdiction </Th> </Tr> <Tr> <Th> Policy areas </Th> <Td> Federal judiciary, civil procedure, criminal procedure, civil liberties, copyrights, patents, trademarks, naturalization, constitutional amendments, congressional apportionment, state and territorial boundary lines </Td> </Tr> <Tr> <Th> Oversight authority </Th> <Td> Department of Justice, Department of Homeland Security, federal judicial nominations </Td> </Tr> <Tr> <Th> House counterpart </Th> <Td> House Committee on the Judiciary </Td> </Tr> <Tr> <Th_colspan="2"> Meeting place </Th> </Tr> <Tr> <Td_colspan="2"> 226 Dirksen Senate Office Building, Washington, D.C. </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th_colspan="2"> Website </Th> </Tr> <Tr> <Td_colspan="2"> judiciary.senate.gov </Td> </Tr> <Tr> <Th_colspan="2"> Rules </Th> </Tr> <Tr> <Td_colspan="2"> <Ul> <Li> Rule XXV. 1. (m), Standing Rules of the Senate </Li> <Li> Rules of Procedure U.S. Senate Committee on the Judiciary </Li> </Ul> </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Standing committee </Th> </Tr>

Who is the ranking member of the senate judicial committee