House Republicans had thrown cold water on the Senate’s bill, and GOP Sen. Rand Paul had vowed all week to slow that process beyond the midnight deadline over objections to Ukraine aid included in the Senate bill. But Paul told CNN on Saturday afternoon that he would not slow down the Senate’s consideration of the House-passed spending bill.

A shutdown could have consequential impacts across the country, from air travel to clean drinking water, and many government operations would grind to a halt – though services deemed essential for public safety would continue.

This story and headline have been updated with additional developments.

CNN’s Manu Raju and Betsy Klein contributed to this report.