to European countries that could force the country to return to war without an act of Congress. Marshall personally supported the treaty's adoption, but recommended several changes, including the requirement that all parties to it acknowledge the Monroe Doctrine and the United States' sphere of influence, and that the tenth article be made non-binding. Wilson began to recover by the end of 1919, but remained secluded for the remainder of his term, steadfast in his refusal or inability to accept changes to the treaty. Marshall was prevented from meeting with him to ascertain his true condition until his final day in office. It remains unclear who made executive decisions during Wilson's incapacity, but it was likely the first lady with the help of the presidential advisers. Post-vice presidency (1921–1925) Marshall had his name entered as a candidate for the presidential nomination at the 1920 Democratic National Convention. He made arrangements with Thomas Taggart to have a delegation sent from Indiana to support his bid, but was unable to garner support outside of the Hoosier delegation. Ultimately he endorsed the Democratic nominees, James M. Cox for president and Franklin D. Roosevelt for vice president, but they were defeated by the Republican ticket of Warren G. Harding and Calvin Coolidge. On their election, Marshall sent a note to Coolidge offering him his "sincere condolences" for his misfortune of having been elected vice president. Marshall considered returning to Columbia City after leaving office, but instead bought a home and opened a law practice in Indianapolis, where he believed there would be better business opportunities. Harding nominated him to serve on the Lincoln Memorial Commission in 1921, and then to a more lucrative position on the Federal Coal Commission in 1922; Marshall resigned from both commissions in 1923. He spent over a year writing books on the law and his Recollections, a humorous memoir. The latter book was completed in May 1925 and subsequent historians have noted it as unusual, even for its time, for not disclosing any secrets or attacking any of Marshall's enemies. Marshall remained a popular public speaker, and continued to travel to give speeches. The last he delivered was to high school students in the town of his birth. Death While on a trip to Washington D.C., Marshall was struck by a heart attack while reading his Bible in bed on the night of June 1, 1925. His wife called