Abe Fortas,
Department of Employment v. United States…
“ On the merits, we hold that the Red Cross is an instrumentality of the United States for purposes of immunity from state taxation levied on its operations, and that this immunity has not been waived by congressional enactment. Although there is no simple test for ascertaining whether an institution is so closely ralated to governmental activity as to become a tax-immune instrumentality, the Red Cross is clearly such an instrumentality. ”
