The comment by Palin, whose running mate John McCain is vying against Obama for president in the November 4 election, was dismissed by the Obama campaign as "gutter politics" and came shortly after the McCain campaign had already called the US senator from Illinois a liar.

With polls showing McCain trailing Obama in many battleground states, including several won by Republicans in the 2004 election, Palin said "There is a time when it's necessary to take the gloves off and that time is right now."

Speaking at a fund-raiser in Englewood, Colorado, she launched an assault on Obama just days after both candidates urged Congress to set aside partisan politics to pass a $700 billion bad-debt securities package in a bid to free up frozen credit markets.

"Our opponent though is someone who sees America, it seems, as being so imperfect, imperfect enough that he is palling around with terrorists who would target their own country," Palin said of Obama, also calling him an embarrassment.

Palin cited a New York Times story on Saturday that examined Obama's relationship with Bill Ayers, a former member of the Vietnam-era militant Weather Underground organisation who is now a professor at the University of Illinois at Chicago.

The Times concluded they were not close.

Obama spokesman Hari Sevugan said, "Today, the McCain-Palin team took their discredited, dishonourable campaign one desperate step further, announcing that they were going to try 'turning a page on this financial crisis' and launching more personal attacks on Senator Obama."

"Instead of offering solutions for working Americans and families struggling through a failing economy, they have offered more gutter politics and false attacks," he said in a statement.

Obama served with Ayers on the board of a foundation in Chicago, and has said he was only eight-years-old when the Weather Underground committed its best-known bombing.

He has also noted that former President Bill Clinton pardoned two members of the group during the last days of his presidency.

Earlier, McCain's campaign called Obama a bald-faced liar in reference to how he characterised the Republican's plan to reform health insurance.

Nampa-Reuters

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