It is hereby declared to be the policy of the United States—
(1)
to foster and encourage the export of agricultural commodities and the products of such commodities;
(2)
not to restrict or limit the export of such commodities and products except under the most compelling circumstances;
(3)
that any prohibition or limitation on the export of such commodities or products should be imposed only in time of a national emergency declared by the President under the Export Administration Act; and