UPDATE 2-Ralph Nader starts U.S. presidential bid

(Adds interview with Nader)

By Donna Smith

WASHINGTON, Feb 24 (Reuters) - Consumer advocate Ralph Nader, blamed by many Democrats for their loss of the White House in the 2000 election, said on Sunday he is launching another independent campaign for the White House.

Nader, who will turn 74 this week, announced his longshot presidential bid on NBC's "Meet the Press" saying that neither the Democrats nor the Republicans were addressing problems facing Americans.

Nader called Washington "corporate occupied territory" that turns the government against the interests of the people. "In that context, I have decided to run for president," he said.

Democrats said they do not expect Nader, who also ran as an independent in 2004, to have much of an impact.

"When you get into running for your third or fourth time, I don't think people will pay that much attention to it, and I wouldn't see it having any effect on the race," Virginia Democratic Gov. Tim Kaine said on "Fox News Sunday."

In an interview with Reuters, Nader said he will push the candidates on a number of issues including health care and changing the tax system to shift the burden away from wage earners and put it on things like pollution, tobacco and "Wall Street speculation" and reduce taxes on wages.

Nader dismissed Democratic criticism of his latest bid for the White House.