The most promising source that I haven't gotten around to checking yet is Micheal F. Holt's The Rise and Fall of the American Whig Party: Jacksonian Politics and the Onset of the Civil War. It isn't quite available to me but it seems both very relevant and very comprehensive.
As per research so far, I've really just found that he continued backing the gold standard when he shouldn't have during the Panic of 1837, along with removing government investments in banks.
I've read conflicting sources on his views of slavery, his continuation of Jacksonian Indian oppression, and small conflicts with Canada and Mexico with US expansion annexation. The internet has been a weak source of information for me so far.
Again, you guys do great work and any help would be appreciated.
Van Buren's not a Whig and so not a major focus of Holt's work. (He's in there, but it's not a good place to go to learn loads about him.) You can get an idea of the Little Magician's presidency from Howe's What Hath God Wrought, which is also far friendlier to the reader than Holt. Howe finishes off in 1848, but that's just long enough to capture Van Buren's last major political campaign. It's not all about him and it's not going to go into intricate detail like a biography might, but Howe can get you situated and his bibliographic essay is a great source of further reading.
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