SIOUX FALLS, S.D. (AP) - U.S. Sen. John Thune says he's frustrated that it's taking lawmakers so long to inch toward a deal before the so-called "fiscal cliff" prompts a variety of tax hikes in the new year, but he's still hopeful.

The South Dakota senator on Sunday night told The Associated Press that "every day, we get closer." He says that it's difficult for Democrats and Republicans to reach a compromise because the parties are deeply divided in how to approach financial issues.

Thune is among the lawmakers in Washington waiting for party leaders to come up with a new deal on which to vote. On Sunday, Senate Majority Leader Harry Reid, a Nevada Democrat, and Senate Republican Mitch McConnell remained at odds.

Thune says everyone will return Monday - hopefully for a vote.

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