The Supreme Court heard argument yesterday in Jam v. International Finance Corp. I wrote about the case last year. The issue in the case is simple. Under DC Circuit precedent construing the International Organizations Immunities Act, international organizations have immunity from suit to the same extent that foreign sovereigns had it in 1945, at the time of the enactment of the IOIA. Should the statute instead be construed to mean that international organizations have immunity from suit to the same extent that foreign sovereign have it today? In practice, the question seems to be: should international organizations be immune from suit for their commercial activities in the United States?