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PROBLEM 6 6A. Use a Keynesian Macro Model to depict the U.S. economy in 2017. 6B. Set out the causal chain to depict the theorized fiscal policy of TCJA. In 2017, the unemployment rate in the United States was 4.0 percent and Capital Investment Expenditures were equal to $1,698,000. In 2018, the year following TCJA, capital expenditures were $1,697,800 and the unemployment rate remained unchanged at 4.0 percent. 6C. Argue whether TCJA was fiscal policy as advocated by Keynes. 6D. Argue whether TCJA had a positive effect on the economy through an increase in capital Investment