In 2001, the Mises Institute published Reassessing the Presidency The Rise of the Executive State and the Decline of Freedom, by John V Denson, which examines the role of the US presidency in warmaking, police powers, and a variety of attacks on private property and human rights. Hint: the effect is bad.
Here it is free online, and here it is in book form and e book form.
In addition to the book, check out the recorded audio lectures from 2004’s Reassessing the Presidency Seminar:
The President as Social Engineer by Michael Levin Unimagined Power: The Presidency in the History of Political Philosophy by Paul Gottfried
Harry Truman and the Imperial Presidency by Ralph Raico Tricking Us Into War: The Cases of Lincoln and Roosevelt by John V. Denson
The Use of George Washington in the Statist Offensive by David Gordon Lincoln and the Triumph of Mercantilism by Thomas J. DiLorenzo
The Impossibility of Limited Government: The Prospects for a Second American Revolution by Hans-Hermann Hoppe The Warren Commision: A Rothbardian Analysis by James Dunlap
Martin van Buren: What Greatness Really Means by Jeffrey Rogers Hummel
William McKinley: Architect of the American Empire by Joseph R. Stromberg
Presidential Money Mismanagement from FDR to Nixon by Joseph T. Salerno
The Electoral College as a Brake on Presidential Power: Its Evolution From Washington to Jackson by Randall G. Holcombe
Teddy Roosevelt and the Origins of the Modern Welfare-Warfare State by Thomas E. Woods, Jr.
Despotism Loves Company: The Story of Roosevelt and Stalin by Yuri N. Maltsev
Woodrow Wilson's Revolution Within the Form by Richard Gamble
Reluctant Imperialism? William Howard Taft and the Colonial Empire by William Marina
Presidential Use and Abuse of the Sherman Act: Cleveland to Clinton by George Bittlingmayer
The Supreme Court as Accomplice: Judicial Backing for Executive Power by Marshall DeRosa
From Bad to Worse: Interventionist Bias in Conventional Presidential Rankings by Richard Vedder