Several American Lawmakers Questioning Possible Deal on Iran's Nuclear Program

Secretary of State John Kerry set to brief senators on banking committee later today

Several American lawmakers expressed doubt Wednesday on a possible deal between world powers and Tehran over its disputed nuclear program.

U.S. Secretary of State John Kerry is set to brief lawmakers on the Senate banking committee later Wednesday about the latest round of negotiations with Tehran. The talks in Geneva failed to produce a deal but Kerry expressed optimism, saying negotiators were very close to an agreement.