WASHINGTON (AP) — Congress is returning to Washington for one last attempt at deal-making this year. The only absolute must-do is preventing a government shutdown on Dec. 11. But lawmakers are also debating whether to deliver another round of coronavirus relief before President Donald Trump leaves office. A virus bill would provide funding for vaccines and testing, for reopening schools and for helping small businesses. But the parties remain divided on the details and the cost. Failure to pass a measure would push virus aid to the top of President-elect Joe Biden’s legislative agenda.