In 1918, LDS president Joseph F. Smith dismissed the White Horse Prophecy as a "ridiculous story... and a lot of trash that has been circulated about... by two of our brethren who put together some broken sentences from [Joseph Smith] that they may have heard from time to time." In his 1966 book "Mormon Doctrine", LDS theologian (and later apostle) Bruce R. McConkie wrote, "From time to time, accounts of various supposed visions, revelations, and prophecies are spread forth by and among the Latter-day Saints, who should know better than to believe or spread such false information. One of these false and deceptive documents that has cropped up again and again for over a century is the so-called White Horse Prophecy." In early 2010, the LDS Church issued a statement stating that "the so-called 'White Horse Prophecy' is based on accounts that have not been substantiated by historical research and is not embraced as Church doctrine." Also in 2010, LDS historian Don L. Penrod examined significant differences in two early handwritten accounts of the prophecy, noted some words and phrases that were not characteristic of Joseph Smith's speaking style or current in his time, and speculated that Rushton had "in his elderly years recorded some things that [Smith] actually said, mixing in words of his own creation." It additionally noted that "memories of words and events, especially many years later, are often faulty." Several sources attribute to Smith the idea that the US Constitution would one day hang by a thread, and LDS Church leaders have issued similar warnings about the Constitution. In 1855, Brigham Young reportedly wrote that "when the Constitution of the United States hangs, as it were, upon a single thread, they will have to call for the 'Mormon' Elders to save it from utter destruction; and they will step forth and do it." In 1858, Orson Hyde, another contemporary of Smith, wrote that Smith believed "the time would come when the Constitution and the country would be in danger of an overthrow; and... if the Constitution be saved at all, it will be by the elders of [the LDS] Church." In 1922, the LDS Church's fifth presiding bishop, Charles W. Nibley, stated that "the day would come when there would be so much of disorder, of secret combinations taking the law into their own hands, tramping upon Constitutional rights and the liberties of the people, that the Constitution would hang as by a thread. Yes, but it will still hang, and there will be enough of good people, many who may not belong to our Church at all, people who have respect for law and for order, and for Constitutional rights, who will rally around with us and save the Constitution."