It would be absolutely ludicrous to have a debt ceiling crisis with a Congress controlled by the GOP a week or so before Trump takes office. Biden should tell the GOP leadership that he will sign one of two bills: either a clean short-term extension (say, six months or so) that permits the new administration to put its fiscal plans in order before the issue comes up again; or a complete repeal of the debt ceiling. Writing a blank check for Trump after his first few months in office should be off the table.