<Tr> <Th> Members </Th> </Tr> <Tr> <Td> <Ul> <Li> Current members <Ul> <Li> (by seniority </Li> <Li> by class) </Li> </Ul> </Li> <Li> Former members </Li> <Li> Hill committees <Ul> <Li> (DSCC </Li> <Li> NRSC) </Li> </Ul> </Li> </Ul> <Ul> <Li> United States Vice President (list) </Li> <Li> President Pro Tempore (list) </Li> <Li> Presiding officer </Li> </Ul> <Ul> <Li> Party leaders </Li> <Li> Party leadership of the United States Senate </Li> <Li> Democratic Caucus </Li> <Li> Republican Conference </Li> </Ul> </Td> </Tr> <Ul> <Li> Current members <Ul> <Li> (by seniority </Li> <Li> by class) </Li> </Ul> </Li> <Li> Former members </Li> <Li> Hill committees <Ul> <Li> (DSCC </Li> <Li> NRSC) </Li> </Ul> </Li> </Ul> <Li> Current members <Ul> <Li> (by seniority </Li> <Li> by class) </Li> </Ul> </Li>

Describe an interesting tradition of the u.s. senate