Suppose some friends you made on an international trip are thinking of moving to the United States. Net immigration between 2000 and 2019 accounted for about two percent of the U.S. population (Census BureauLinks to an external site.). At the same time, the U.S. population over 65 is increasing much faster than the percentage of the population under age 20 (Census BureauLinks to an external site.). Use the model of AD-AS to explain the impact of (i) immigration and (ii) the aging of America on the economy