By Richard Cowan, Andy Sullivan and Katharine Jackson

WASHINGTON (Reuters) -The longest government shutdown in U.S. history could end this week after a compromise that would restore federal funding cleared an initial Senate hurdle late on Sunday, though it was unclear when Congress would give its final approval.

The deal would restore funding for federal agencies that lawmakers allowed to expire on October 1, bringing welcome relief to low-income families that have seen food subsidies disrupted, hundreds of thousands of federal workers who have gone unpaid for more than a month and travelers who have faced thousands of canceled flights.

It would extend funding through January 30, leaving the federal government for now on a path to keep adding about $1.8 trillion a year to its $38 trilli

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