2. In November 2021, President Biden signed into law legislation to spend $1 trillion on repairing the nation's crumbling infrastructure, including roads, bridges, transit systems, and other forms of infrastructure. (Fixing the nation's crumbling infrastructure seems to be a goal of every president; President Trump had proposed similar legislation in early2018).

a. Is $1.9 trillion a big number? Explain how you know.

b. Is President Biden's plan appropriate fiscal policy for the current economic situation (in November 2021, the unemployment rate was over 6%)? Explain your answer in terms of Aggregate Demand-Aggregate Supply.