WASHINGTON (CNN) -- As he has done on the campaign trail all year, New Mexico Gov. Bill Richardson touted his lengthy resume Monday when he officially declared his White House bid in Los Angeles, California.

"I am running for president, because these times call for a leader with a proven track record, and a demonstrated ability to bring people together to tackle our problems at home and abroad," Richardson said. "I am that person, not because I say so, but because of what I have done, and what I can do for the American people."

Richardson, a former congressman, energy secretary, and United Nations ambassador, also slammed the Bush administration over its "willful ignorance."

"The challenges we face are not acts of God or accidents of fate," he said. "They were man-made and deliberate. Whether it was willful ignorance or an ignorant will, we are left with the ravages of an administration that will take years to rectify."

In a new Iowa poll of the Democratic presidential candidates, Richardson registers at 10 percent, trailing former North Carolina Sen. John Edwards, Illinois Sen. Barack Obama, and New York Sen. Hillary Clinton.

Richardson first set up a presidential exploratory committee in late January.

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