Once some people have enough money, they chase power. That often leads to politics. Of course, it's also easier to get elected if you have a fortune to spend on campaigning. So it should come as no surprise that there are some very, very rich members of Congress. CNBC provides a slideshow of the 15 wealthiest. Weighing in at #12 is House Speaker Nancy Pelosi (D-CA). She is worth at least $21.7 million, according to the piece. In fact, she was worth even more in 2008, but she was a victim of the real estate bubble least year:

In 2008, she reported assets worth at least $25.28 million, which increased to a minimum of $29.74 million in 2009, mostly because of the addition of two assets worth $1 million to $5 million -- an investment fund specializing in Asian ventures and a United Football League team, though the football team is also listed as posting a loss of $1 million to $5 million.

But the minimum value of the Speaker's liabilities dropped significantly in 2009. A mortgage on a vineyard that had been valued at more than $5 million is now listed as being worth $1 million to $5 million.

Check out the full slideshow at CNBC.

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