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Environmental Protection Agency chief Mike Leavitt signed new regulations Tuesday aimed at cutting pollutants from diesel engines in off-road vehicles such as farming and construction equipment by 90 percent over the next eight years.

Maj. Gen. Antonio Taguba told Congress today that his investigation into alleged abuses at the Abu Ghraib prison in Iraq found failures of discipline, training and leadership. Kwame Holman reports.

At the Pentagon, President Bush issued a strong endorsement of Defense Secretary Donald Rumsfeld and provided an update on the war in Iraq. The following is text of Mr. Bush's statement as transcribed by the White House.

The United States bombed the Baghdad headquarters of radical Shiite cleric Muqtada al-Sadr today. The coalition said 35 insurgents were killed in the strike, while two American troops were killed elsewhere in Iraq. Terence Smith gets an update on the…