Martin Van Buren: The Greatest American President. Jeffrey Rogers Hummel's article from the "Independent Review" (v4n2) proposes that Van Buren is "arguably the president most responsible for the freedoms enjoyed by the American people."
From the site:
Historians seldom give the eighth president of the United States the recognition he deserves. Van Buren’s avoidance of foreign wars, successful fight to reduce central authority, unsurpassed ideological clarity and enduring positive influence on the Democratic Party make him arguably the president most responsible for the freedoms enjoyed by the American people.