President Biden’s $1.9 trillion covid-19 relief plan, added to the stimulus measure Congress passed in December with the incoming administration’s strong support, would represent the boldest act of macroeconomic stabilization policy in U.S. history. Its ambition, its rejection of austerity orthodoxy and its commitment to reducing economic inequality are all admirable. It is imperative that safety-net measures for those suffering and investments in vaccination and testing be undertaken rapidly after the indefensible delays of the last months of the Trump administration.