Senators are working behind the scenes on changes to a House-passed bill codifying marriage equality to get it across the finish line, Axios has learned. Why it matters: The legislation has been mired in uncertainty since landing in the upper chamber, with just a handful of GOP senators openly stating they plan to vote for the bill — short of the 10 needed to break a filibuster. Most Republicans have withheld how they plan to vote, and frustrations over Democrats’ steaming ahead on a major reconciliation package now threaten to boil over into other bipartisan legislation.