With one day left before the 2020 election, one issue hasn’t received any attention, but it may be the biggest challenge facing policy makers starting in 2021: fiscal policy and the federal budget. We are now one month into the new FY 2021, and don’t have a spending bill for the rest of the year (that expired in December and will have to be finalized in a lame duck session of Congress).   We don’t have that fourth leg of the COVID relief support program finished either. That will either be taken up in the lame duck session, with election maneuvering cooled, or, based on the election outcome and control of the Senate, will be pushed until early 2021. But as the economy comes off its huge 33 percent rebound in GD...