WASHINGTON (Reuters) – The U.S. Senate on Thursday passed a bill that would extend federal funding through Nov. 21 and avert partial agency shutdowns when existing authorization expires on Oct. 1.

The Senate signed off by a vote of 82 to 15 on legislation that was approved by the House of Representatives on Sept. 19, sending it to President Donald Trump for signing into law.

The legislation is needed because Congress and the Trump administration so far have failed to agree on the one-dozen bills that would fund most government activities in the fiscal year that begins Oct. 1.

One of the biggest disagreements is over Trump’s demand for $12 billion in fiscal 2020 to build a wall along the U.S.-Mexico border, which most Democrats and some Republicans oppose.

A central promise of Trump’s presidency has been the construction of a wall to repel immigrants, many from Central America, from crossing into the United States.

In the face of congressional opposition, Trump early this year declared a national emergency, which he said allowed him to divert appropriated money from other programs to the border wall. On Wednesday, the Senate voted to end that emergency declaration, a move Trump likely would veto if the House of Representatives takes the same step.

There are also unresolved disagreements over funding for immigrant detention centers, public health facilities and other issues.

(Reporting by Richard Cowan; Editing by Dan Grebler)