WASHINGTON It's been nearly a week since the government shutdown, and there are no signs of a breakthrough.

Both Republicans and Democrats made the rounds on Sunday morning talk shows to point fingers at each other

Congressional Democrats have said they want Republicans to drop demands to change Obamacare as part of negotiations to fund the government and raise the debt ceiling.

Texas Republican Sen. Ted Cruz was asked by CNN's Candy Crowley whether changes to Obamacare should be attached to an increase in the debt ceiling.

The debt ceiling historically has been among the best leverage that Congress has to reign in the executives, Cruz said. My point is that there's great historical precedence. Since 1978, we raised the debt ceiling 58 times. A majority of those times 28 times Congress attached very specific and stringent requirements, many of the most significant spending restraints, things like Gramm-Rudman, things like sequestration came from the debt ceiling. So the president's demand jack up the nation's credit card with no limits, no constraints it's not a reasonable demand.

Sen. Susan Collins, a moderate Republican, has presented a new proposal to end the shutdown.

She says Congress should repeal an excise tax that helps pay for Obamacare, and offset that loss in revenue by lowering pension payments by employers for the short-term.

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