WARREN G HARDING OF COURSE
My answer is obviously Thomas Jefferson. He bought the Louisiana Purchase doubling the size of the United States, sent Lewis and Clark to explore the west, tried keeping a small government, stretched the importance of separation of church and state, and had some of the greatest quotes ever. Oh, and he grew hemp.
I'll post a few.
"The two enemies of the people are criminals and government, so let us tie the second down with the chains of the Constitution so the second will not become the legalized version of the first."
"The people will not understand the importance of the Second Amendment until it is too late."
"Millions of innocent men, women and children, since the introduction of Christianity, have been burnt, tortured, fined and imprisoned; yet we have not advanced one inch towards uniformity."
"But it does me no injury for my neighbor to say there are twenty gods or no God. It neither picks my pocket nor breaks my leg."
"Question with boldness even the existence of a god; because if there be one he must approve of the homage of reason more than that of blindfolded fear."
"The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants."
"My reading of history convinces me that most bad government results from too much government."
"Honesty is the first chapter in the book of wisdom."
No offense guys, but Reagan was crap (for several reasons), FDR gets minus points for relocation camps, and Andrew Jackson is responsible for the Indian Removal Act.