Explain how united states government reacted to COVID-19?

Federal Government Responses to COVID-19 

Students conduct a policy research paper on how the United States Government reacted and dealt with the outbreak of COVID-19 and its devastating effects on human and economic costs.  Your research consists of looking into HOW the President of the federal government and the Federal Reserve Chairman used their institution to help peoples in dire need. Students can evaluate the outgoing government’s works and the hope inspired by the incoming government plan and its implementation.
What do you call the policy each of them conducted?
Please indicate if you consider their reaction as an expansionist/contractionary policy.
In which circumstances would they use the opposite policy of your selection?
What do you conclude about how they reacted to COVID-19?

Optional reference:                                                                                                               https://ballotpedia.org/Federal_government_responses_to_the_coronavirus_(COVID-19)_pandemic,_2020