Today’s accountability news:

• In the midst of the oil spill in the Gulf of Mexico, BP has been working hard to block increased transparency for derivatives trading, reports Mother Jones.
• "Amid complaints about high taxes and calls for a smaller government, Americans paid their lowest level of taxes last year since Harry Truman's presidency," writes USA Today.
• Toyota waited almost an entire year to issue a recall associated with truck and SUV steering rods in the U.S., long after having done so in Japan, the AP has discovered.
• Last week, Payday lenders and check cashers descended on Congress to fight financial reform efforts, reports the Washington Post.
• The Wall Street Journal questions whether a $7.5 million dollar trade by a hedge fund in Chicago may have led to a ripple effect in the stock market, leading to a "tsunami of pressure that spread to nearly all parts of the market."

These stories are part of our ongoing roundup of investigations from other news outlets. For more, visit our Investigations Elsewhere page.