FILE - This April 14, 2012 file photo shows U.S. Ambassador to the United Nations Susan Rice speaking at U.N. headquarters. With congressional opposition softening, U.N. Ambassador Susan Rice could find her name in contention as early as this week to succeed Hillary Rodham Clinton as secretary of state. Her nomination to the top Cabinet job could signal the potential for a more robust intervention in world crises in President Barack Obamas second term. (AP Photo/Craig Ruttle, File)

WASHINGTON - U.S. Senator Susan Collins, after meeting U.S. Ambassador to the United Nations Susan Rice on Wednesday, said she could not support her for Secretary of State without more information.

Other Republicans have threatened to block Rice's nomination if President Barack Obama picks her to replace Hillary Clinton, which would require Senate confirmation. Votes from moderate Republicans like Collins would be needed to overcome those procedural obstacles.

“I would need to have additional information before I could support her nomination,” Collins told reporters.

She said she would support Democrat Senator John Kerry for secretary of state. “I think John Kerry would be an excellent appointment and will be easily confirmed by his colleagues,” she said. - Reuters