Law Prof Paul Caron has examined the tax returns released by Barack Obama today for the years 2000 to 2006. You can read the returns over at his blog.

What is surprising, given the recent controversy over Obama's membership in the Trinity United Church of Christ, is how little the Obamas apparently gave to charity -- well short of the biblical 10% tithe for all seven years. In two of the years, the Obamas gave far less than 1% of their income to charity; in three of the years, they gave around 1% of their income to charity. Only in the last two years have they given substantially more as their income skyrocketed -- 4.7% in 2005 and 6.1% in 2006. (Of course, it is possible that the Obamas may have made gifts to other worthy causes that were not deductible for federal income tax purposes.)