WASHINGTON (AP) — The House is expected to try to pass a Social Security-related bill next week that would provide benefits to workers who also qualify for other types of retirement benefits, despite a surprise move by leaders of the far-right Freedom Caucus to derail the effort.

It’s a quick turnaround to salvage a bipartisan effort to pass the bill in what is now Congress’ post-election lame duck period.

Here’s what’s happening:

WHAT IS THE USE OF DESIGN?

A measure to repeal the so-called “state pension equalization” is gaining support in Parliament; 300 lawmakers signed the legislation, including House Speaker Mike Johnson.

The bill summary says that offsetting state pensions “reduces Social Security benefits for spouses, widows, and widows who also receive state pensions in various circumstances.”

The bill would repeal that provision and restore full Social Security benefits.

How did the bill develop?

To move the legislation forward, the bill’s sponsors, Republican Rep. Garrett Graves of Louisiana and Democratic Rep. Abigail Spanberger of Virginia, used a rarely successful process called a habeas corpus petition.

They collected the minimum required 218 signatures from House lawmakers to move the bill out of committee and send it to the chamber for a vote.

The move is generally seen as an insult to House leaders, particularly the House speaker and the majority leader, who sets the session schedule.

But Spanberger and Graves, who did not seek re-election, had little to lose. Moreover, Johnson supported the bill before he became speaker.

HOW DID CONSERVATIVES BLOCK THIS?

The two leaders of the conservative House Freedom Caucus intervened while the rest of Congress was away from Capitol Hill, mostly in their states for Election Day.

Freedom Caucus chairman Rep. Andy Harris, R-Md. and former chairman Rep. Bob Goode, R-Va., used a routine pro forma session of the House on Tuesday to quickly table some of the measure.

The Freedom Caucus tends to block new spending. The nonpartisan Congressional Budget Office estimated the bill would add about $196 billion to the federal budget deficit over a decade.

That’s the amount people miss out on before they get their full Social Security benefits back, Graves said.

WHAT HAPPENS NEXT?

The Conservatives actually put back the procedural rules when they tabled the legislation, but not the bill itself.

The legislation is expected to advance with a House vote, likely next week.

However, passage will now be more difficult and will require a super-majority threshold rather than a simple majority as planned under the rule Freedom Caucus leaders returned to.

WHO WILL BENEFIT IF THE DESIGN IS PASSED?

If approved, the bill would repeal provisions that reduce Social Security benefits for individuals who receive other benefits, such as state or local government pensions, the summary says.