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Some Republican senators are indicating that they would do "whatever is necessary" - including a filibuster - to stop UN Ambassador Susan Rice from becoming the next secretary of state, if nominated by President Obama.

"I don't trust her and the reason I don't trust her is because I think she knew better and if she didn't know better she shouldn't be the voice of America," Sen. Lindsey Graham, R-S.C., said today, "I don't think she deserves to be promoted, there are a lot of qualified people in this country the president could pick but I am dead set on making sure we don't promote anybody who is an essential player in the Benghazi debacle."

Rice, along with Sen. John Kerry, D-Mass., are reportedly being considered among others to replace Secretary of State Hillary Clinton when she steps down.

Sen. John McCain, R-Ariz., said today that he'd be willing to filibuster her nomination and to "whatever is necessary to block the nomination" of Rice if it came to that because of how she handled the aftermath of the Libya attack, characterizing it at first as a "spontaneous" attack and not a terrorist attack.

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"My judgment at this time is that four American were killed and that the information that the UN ambassador conveyed was clearly false," McCain said. "There's overwhelming evidence that it was completely false and she should have known what the situation and circumstance were and not tell the world on all the Sunday morning talk shows."

Graham said even if Rice had no role in the handling of the Libya aftermath he still doesn't think she's qualified.

"I don't think we're doing very well in the UN quite frankly," Graham said. "China and Russia has been walking all over us. I'm not so sure she's the strongest advocate; I think she's more political operative than she is anything else."

He predicted that there could even be many Democrats in Congress that would vote against her if nominated.