Then, in 1920, the "Jones Act" required U.S.-flagged vessels to be built in the United States, owned by U.S. citizens, and documented under the laws of the United States. All goods entering or leaving Alaska had to be transported by American carriers and shipped to Seattle prior to further shipment, making Alaska dependent on Washington. The U.S. Supreme Court ruled that the provision of the Constitution saying one state should not hold sway over another's commerce did not apply because Alaska was only a territory. The prices Seattle shipping businesses charged began to rise to take advantage of the situation. This situation created an atmosphere of enmity among Alaskans who watched the wealth being generated by their labors flowing into the hands of Seattle business holdings.