Note that the effects of Postal Service adjustments could be substantial and widespread, not only on mailers who have invested heavily around the present structure of products and rates, but also on such competitors as newspapers.
The mailers do not want there to be changes to the Postal Service.
mnli hypothesis: The mailers do not want there to be changes to the Postal Service. premise: Note that the effects of Postal Service adjustments could be substantial and widespread, not only on mailers who have invested heavily around the present structure of products and rates, but also on such competitors as newspapers.