<Tr> <Td> </Td> <Td> 1919--23 </Td> <Td> Jean Monnet </Td> </Tr> <Tr> <Td> </Td> <Td> 1923--33 </Td> <Td> Joseph Avenol </Td> </Tr> <Tr> <Td> </Td> <Td> 1937--40 </Td> <Td> Seán Lester </Td> </Tr> <Tr> <Td_colspan="2"> Historical era </Td> <Td> Interwar period </Td> </Tr>

Who rejected the american admission into the league of nations