Millions could soon get full social security benefits. Will the Senate pass this bill?

If the bill is signed into law, the changes would be effective for benefits payable after December 2023.

The House has passed legislation that would provide full Social Security benefits to millions of people, pushing it one step closer to becoming law.

The Social Security bill on Tuesday won bipartisan support in the House, 327-75, in what is now the lame-duck period for Congress. The bill now heads to the Senate, where passage is not assured despite considerable support.

Here’s what to know about the legislation and what could happen next.