So, when do the Clintons release their tax returns? Friday of course so that it’s buried over the weekend. Smart! Especially given the fact that they’ve gotten wealthy through a few donors to their campaigns. Hmmm, I wonder what the donors got for their money:

After leaving the White House, the Clintons earned $30 million from their best-selling books and brought in as much as $15 million more through an investment partnership with one of her top presidential campaign fundraisers, California billionaire Ronald Burkle. The disclosures came with yesterday’s long-awaited release of the Clintons’ joint tax returns, a move made in the thick of Sen. Clinton’s fight with Sen. Barack Obama (Ill.) for the Democratic nomination.

[…]
A common thread running through the couple’s personal finances is the presence of many of the same figures who helped bankroll the presidential campaigns of Bill Clinton, and now that of his wife.
Major donors to both Clintons’ White House bids hired the former president as a consultant, joined him in lucrative investment ventures and paid him six-figure sums to speak at corporate gatherings.
The considerable crossover between the couple’s decades of political fundraising and their personal profit also extended at times to the former president’s charity work and his presidential library, though many records related to those remain secret. What is clear is that numerous financial patrons — individuals as well as large corporations — repeatedly emerge in the Clintons’ circle.
Chief among them is Burkle, the founder of the Yucaipa investment firm, who not only has provided Bill Clinton with a hefty source of income during his post-presidency but also ranks as one of Sen. Clinton’s “Hillraisers,” a title given to those who raise more than $100,000 for her presidential bid. Burkle has held fundraisers for her at his Beverly Hills estate, and also made six-figure donations to independent political groups, such as Emily’s List, that are supporting her.

The tax returns show Bill Clinton’s partnership with Burkle, at various arms of his Yucaipa firm, yielding in excess of $1 million a year, starting in 2003. In 2005, Clinton collected $5 million from those investments, and more than $2.5 million in each of the past two years. The former president served as a senior adviser to the private firm, helping Burkle land investors and identify business opportunities. The Wall Street Journal reported that Clinton started to unwind the relationship earlier this year and could ultimately receive a payout worth about $20 million.

Seems to be plenty of fodder for Obama to work with.