Statistics for occurrence #1 of “President Buchanan” in entry cass-lewis of Harper's Encyclopedia of United States History:

...ce, and from 1845 to 1848 United States Senator. He received the Democratic nomination for President in 1848, but was defeated, and was again in the United States Senate from 1851 to 1857, when President Buchanan called him to his cabinet as Secretary of State; but when the President refused to reinforce the garrison at Fort Sumter, he resigned. General Cass favored the compromise of 1850, and also favored ...
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