The deadlock over ending the US government shutdown deepened on Wednesday, with senators once again rejecting competing bills to restart funding as Democrats and Republicans remain dug in on their demands for reopening federal agencies.

The funding lapse has forced offices, national parks and other federal government operations to close or curtail operations, while employees have been furloughed. Signs of strain have mounted in recent days in the parts of the federal government that remained operational, with staffing shortages reported at airports across the US as well as air traffic control centers. Further disruptions may come next week, when US military personnel and other federal workers who remain on the job will not receive paychecks, unless the government reopens.

When the Senate met on Wednesday afternoon, it became clear that sentiment had not shifted in the eight days since the shutdown began. For the sixth time, Democratic and Republican proposals to restart funding both failed to receive enough support to advance, and no senators changed their votes from recent days.