How can bad U. S. domestic policy and foreign policy impact/affect people living in the United States ? Answer for each type of policy. I. NEED. HELP

It is widely recognized that foreign and domestic issues are now powerfully joined. But we need to fully understand how they intersect and what that means for the world. Earlier this year, the Geoeconomics and Strategy Program at the Carnegie Endowment for International Peace launched a series of case studies to help policy experts answer this fundamental question:

Are significant changes to U.S. foreign policy required to better advance the economic interests of America’s middle class?

Leading up to the U.S. presidential 2020 election, candidates will be seeking direction on how best to address Americans’ struggles amid uncertain domestic and global environments. However, before policy experts across the political spectrum share their views, they should first test their long-held assumptions about the economic fortunes of America’s middle class and how various U.S. foreign policies may impact them. Local economies across the country look very different today than they did in past decades, and sticking with traditional approaches, or radically departing from them, might ultimately do more harm than good.

Explanation:

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the authority to tax.