Sen. Joe Manchin (D-W.Va.) told The Hill in an interview on Tuesday that he remains “very hopeful” that the Senate will reconsider and pass a bipartisan bill on background checks that failed to get the 60 votes it needed to move forward earlier this year.

Manchin co-sponsored the background checks bill with Sen. Pat Toomey (R-Pa.), and while the measure was supported by a majority of the Senate, it failed to break a Republican filibuster.

Manchin has said he’s continuing to work behind the scenes to revive the legislation, and is considering cosmetic changes to “clarify” language that some lawmakers were uncomfortable with. For instance, the bill does not require background checks for private gun sales, only commercial sales, but some said the bill didn’t go far enough in delineating that distinction.