I don't find the Hitler comparison particularly helpful.  If you want to say that someone was absolutely evil, might as well say "the devil" and be done with it; and, unfortunately, the national leaders in the founding generation and its successor generation - including Jackson and Van Buren - were without exception a pretty intensely racist bunch by modern standards.

But let's not sugar coat things, here.  There's every reason to believe Jackson knew the signers of the Treaty of New Echota didn't have the authority to negotiate on behalf of the Cherokee.  His negotiators used a common trick at the time: find nearly anyone who will mark an "X" on the line, whether or not they can reasonably be said to have the authority to negotiate on behalf of their people - and then (as Van Buren ultimately did) send in the army to enforce the provisions of the treaty.

Not sure where you get the $68mill figure from, by the way; got a source on that?  I'll have to look it up, but that sounds vastly inflated, I thought it was more like $4-5 million.

Jackson is also famous for looking the other way while Georgia tried to annex Cherokee lands with the assistance of some heavy duty thuggery by the Dahlonega gold rushers.  This was the subject of the Supreme Court case, which Georgia - not Jackson - lost.  But it was a politically convenient marriage - Jackson's removal policies were supported by Georgia's legal harassment and the gold rushers' thuggery, because it provided some pretty significant motivation for Cherokees to take the best deal they could and get out.  Which, of course, the Cherokee leadership declined to do anyway.

Not Hitler, no.  But not exactly "honorable" either.  And while much of your comment has some justification, this is bizarre:

That sounds suspiciously like hero worship.  What is your basis for saying he "likely had no idea" that America would marginalize the tribes?  

Actually the Hitler analogy isn't far off.  Yes, the original diary is correct.  Jackson really did leave one of the most disgraceful legacies in US history -- & he was quite proud of it.

Chickasaw History
http://www.tolatsga.org/chick.html

http://www.tolatsga.org/Cherokee2.html

After the initial Indian victories of Little Turtle's War (1790-94), most of the Ohio Chickamauga returned south and settled near the Tennessee River in central Tennessee and northern Alabama. From here, they had the unofficial encouragement of the Spanish governments of Florida and Louisiana and began to attack nearby American settlements. One of these incidents almost killed a young Nashville attorney/land speculator named Andrew Jackson, which may explain his later attitude regarding the Cherokee.
[. . .]
The Cherokee won both cases brought before the Supreme Court: Cherokee Nation vs Georgia (1831) and Worcester vs Georgia(1832), but the legal victories were useless. Jackson's answer: "Justice Marshall has made his decision. Let him enforce it." Without federal interference, Georgia and Tennessee began a reign of terror using arrest, murder and arson against the Cherokee.

http://americanindian.net/
September 18, 1813: After the "massacre" at Fort Mims, Alabama, by the "Red Stick" Creeks, the word of the Creek uprising spreads. In Nashville, Tennessee, Governor William Blount calls on the State Legislature to "teach these barbarous sons of the woods their inferiority." The cry for vengeance rings throughout the area. In a few weeks, Andrew Jackson begins his campaign against the Creek.

March 27, 1814: East of modern Alexander City, Alabama, Andrew Jackson, and 2000 whites, Cherokees, Choctaws and "White Stick" Creeks, discover a fort built at the village of Tohopeka on a Horseshoe Bend in the Tallapoosa River, by " Red Stick" Creeks. The Red Stick Creeks are anti-white, the White Stick Creeks are pro-white. Jackson attacks the 800 to 1,000 Red Stick Creeks, led by Chief Menewa. The Creek village and defenses covered approximately 100 acres on the peninsula made by the bend in the river. To cross the river, Jackson's Cherokee allies, led by Chief Junaluska, swim the river to steal Creek canoes. Jackson's forces eventually set fire to the Red Stick Creeks' wooden barricade. In the end, only about fifty of the Red Stick Creeks survive the battle. Jackson's forces lose forty-nine soldiers and twenty-three warriors killed, and 157 soldiers and forty-seven warriors wounded. Jackson's forces capture approximately 300 women and children. The Red Stick Creek leader William Weatherford is not at the battle. Weatherford will turn himself in later. This defeat leads to the Treaty of Horseshoe Bend signed on August 9, 1814, whereby the Creeks gave up twenty-three million acres of land to the United States.

August 9, 1814: The Treaty of Fort Jackson (7 stat.120) officially ends the Creek War. The Creeks, including those who fought with Andrew Jackson, are forced to cede 22,000,000 acres, almost half their lands, to the United States. Timpoochee Barnard, one of the Yuchi Indian allies of the Americans, is one of the signatories to the treaty of Fort Jackson. Fort Jackson, formerly Fort Toulouse, is in modern Wetumpka, Alabama.
 October 18, 1820: Today, a treaty will be negotiated between Andrew Jackson and the CHOCTAWs. The CHOCTAWs will give up lands in Mississippi for land in western Arkansas. Part of the lands that Jackson promised to the Indians belonged to Spain, or were already settled by Europeans. This would be called the Treaty of Doak's Stand. Chief Pushmataha will be one of the signers.

May 28, 1830: Andrew Jackson, called "Sharp Knife" by the Indians, has long fought the Indians of the southeast. He believes that the Indians and white settlers will not be able to peacefully live together. His solution to this is to renege on all of the previous treaties, which granted the Indians their lands forever, and to move all Indians west of the Mississippi River. Jackson makes this proposal to Congress during his First Congressional speech on December 8, 1829. Congress makes the proposal into a law on this date.

Book info:
http://www.amazon.com/gp/product/0306811 707/ref=ase_onthisdateinn-20/104-8798979 -8870303?s=books&v=glance&n=2831 55&tagActionCode=onthisdateinn-20
http://statelibrary.dcr.state.nc.us/nc/b io/public/jackson.htm
 http://digital.library.okstate.edu/kappl er/vol2/treaties/che0439.htm
Jackson's record regarding Native Americans was not good. He led troops against them in both the Creek War and the First Seminole War and during his first administration the Indian Removal Act was passed in 1830. The act offered the Indians land west of the Mississippi in return for evacuation of their tribal homes in the east. About 100 million acres of traditional Indian lands were cleared under this law.

Two years later Jackson did nothing to make Georgia abide by the Supreme Court's ruling in Worcester vs. Georgia in which the Court found that the State of Georgia did not have any jurisdiction over the Cherokees. Georgia ignored the Court's decision and so did Andrew Jackson. In 1838-1839 Georgia evicted the Cherokees and forced them to march west. About twenty-five percent of the Indians were dead before they reached their new lands in Oklahoma. The Indians refer to this march as the "Trail of Tears" and even though it took place after Jackson's presidency, the roots of the march can be found in Jackson's failure to uphold the legal rights of Native Americans during his administration.