President Barack Obama and Senate Democrats tried Monday to break a political logjam that could threaten the U.S. economy, advancing legislation that would raise the federal debt ceiling as soon as possible.

Democrats said they will attempt to force Republicans to agree to a long-term $1 trillion debt-limit increase to ensure that the government does not reach a point this month where it may be unable to pay its bills, risking its first default. They said they also may accept a short-term bill, perhaps lasting only weeks, if necessary to avoid going over the brink.

The Democratic push on the debt limit came as a partial government shutdown entered its second week with no solution in sight. New polling showed that the fiscal standoff is hurting Republicans far more than it is Obama, although no party is faring particularly well.