I've written a couple of posts on the subject of Truth in U.S. Wars; and I hope to write something about the War of 1812. But I'm not there yet.
Fortunately, Justin Raimondo is there, already. I encourage you to read his interesting and challenging post -- "1812: The War Party's First Great Success"; and I doubly encourage you to do so if (a) you are interested in teaching your children about history, or if (b) you are interested in applying lessons of history to the circumstances of today.
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For a related commentary, see Bionic Mosquito's post, "American Imperialism: Born Hand-In-Hand With The Constitution."
Jefferson Morley also has an article at Salon, about "America's first neo-con war." Interesting.