Long-delayed legislation to impose new sanctions on Russia hit another snag on Monday when the influential Republican chairman of the Senate Foreign Relations Committee said the announcement of a deal to move the bill forward was premature. 'We still have a little work to do,' Senator Bob Corker told reporters at the US Senate. He said he expected differences could be resolved quickly but declined to give a specific timeframe. Republicans and Democrats in the House of Representatives and Senate Democrats had announced on Saturday that they had reached an agreement that would allow a vote on the sanctions bill in the House on Tuesday. House aides said the bill is expected to pass overwhelmingly. But Corker said the announcement of a deal 'seemed somewhat premature.' 'It's not quite done, but it feels like it's moving to a good place,' Corker said. He said issues included North Korea sanctions that were added to a bill including sanctions on Iran and Russia that passed the Senate overwhelmingly in June.