Original: This was the only department of the U.S. government to be created through presidential reorganization authority, in which the president was allowed to create or reorganize bureaucracies as long as neither house of Congress passed a legislative veto.
Simplified: To date, this was the only department of the U.S. government to be created through presidential reorganization authority, in which the president is allowed to create or reorganize bureaucracies as long as neither house of Congress passed a legislative veto.