I wonder though if Ellen White wouldn't have strongly endorsed much of the document and urged the church to support the same moral positions just as she did during the grass-roots but religiously based temperance movement that ultimately resulted in Prohibition.
No she would have quoted what God had told her already and warned us that the 'marvelous working of Satan' is soon to take place and the end is near.
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When Protestantism shall stretch her hand across the gulf to grasp the hand of the Roman power, when she shall reach over the abyss to clasp hands with spiritualism, when, under the influence of this threefold union, our country shall repudiate every principle of its Constitution as a Protestant and republican government and shall make provision for the propagation of papal falsehoods and delusions, then we may know that the time has come for the marvelous working of Satan and that the end is near.—Testimonies for the Church 5:451 (1885).
Just as God showed me, when this pope dies we are going for the ride of the ages.