For a capsule online history see Alonzo Hamby, "Outline of U.S. History" (2010) online; for recent textbooks see David M. Kennedy and Lizabeth Cohen, The American Pageant (15th ed. 2012); James A. Henretta, Rebecca Edwards and Robert O. Self, America's History (8th ed. 2014); James L. Roark, et al. American Promise (5th ed. 2013); Robert A. Divine, et al. America Past and Present (10th ed. 2012)
William Crotty, "Policy and Politics: The Bush Administration and the 2008 Presidential Election," Polity (2009) 41#3 pp 282–311 doi:10.1057/pol.2009.3
Thomas G. Paterson. "United States Intervention in Cuba, 1898: Interpretations of the Spanish–American–Cuban–Filipino War," The History Teacher (1996) 29#3 pp. 341–361 in JSTOR
Fred H. Harrington, "The Anti-Imperialist Movement in the United States, 1898–1900," Mississippi Valley Historical Review (1935) 22#2 pp. 211–230 in JSTOR
Thomas A. Bailey, "Was the Presidential Election of 1900 a Mandate on Imperialism?" Mississippi Valley Historical Review (1937) 24#1 pp 43–52 in JSTOR
Glenn Greenwald, "Obama’s new executive order on Guantanamo: The president again bolsters the Bush detention regime he long railed against," Salon March 8, 2011