<Tr> <Td> May 18 </Td> <Td_colspan="4"> "Horseman" Willis Van Devanter announces his intent to retire </Td> </Tr> <Tr> <Td> May 24 </Td> <Td> Steward Machine Company v. Davis </Td> <Td> 301 U.S. 548 (1937) </Td> <Td> 5--4 </Td> <Td> Social Security tax constitutional </Td> </Tr> <Tr> <Td> Helvering v. Davis </Td> <Td> 301 U.S. 619 (1937) </Td> <Td> 5--4 </Td> </Tr> <Tr> <Td> Jun 2 </Td> <Td_colspan="4"> Van Devanter retires </Td> </Tr>

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