“This is chaos.”Senate Majority Leader John Thune, R-S.D., has said he was waiting for Democrats to outline their what they want and he suggested that they need to be talking to the White House. With no evident negotiations underway, a partial shutdown appeared increasingly likely starting Saturday. “None of this is revolutionary,” said Murphy, the top Democrat on the subcommittee that oversees homeland security spending. Many obstacles to a dealDespite some conversations among Democrats, Republicans and the White House, it was unclear whether there could be a resolution in time to avoid a partial shutdown. Even if the Senate could resolve the issue, House Republicans have made clear they do not want any changes to the bill they have passed.