<Table> United States of America <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th_colspan="2"> United Nations membership </Th> </Tr> <Tr> <Th> Membership </Th> <Td> Full member </Td> </Tr> <Tr> <Th> Since </Th> <Td> October 24, 1945 (1945 - 10 - 24) </Td> </Tr> <Tr> <Th> UNSC seat </Th> <Td> Permanent </Td> </Tr> <Tr> <Th> Permanent Representative </Th> <Td> Nikki Haley </Td> </Tr> </Table> <Tr> <Th_colspan="2"> United Nations membership </Th> </Tr>

When did the united states join united nations