Moody Analytics has tried to take what Trump says and predict what would happen to the economy if he could actually do what he says.

Broadly, Mr. Trump’s economic proposals will result in a more isolated U.S. economy.
Cross-border trade and immigration will be significantly diminished, and with less trade and immigration, foreign direct investment will also be reduced. While globalization has created winners and losers in the U.S. economy in recent decades, it contributes substantially to the ongoing growth of the U.S. economy. Pulling back from globalization, as Mr. Trump is proposing, will thus diminish the nation’s growth prospects.

Mr. Trump’s economic proposals will also result in larger federal government deficits and a heavier debt load. His personal and corporate tax cuts are massive and his proposals to expand spending on veterans and the military are significant. Given his stated opposition to changing entitlement programs such as Social Security and Medicare, this mix of much lower tax revenues and few cuts in spending can only be financed by substantially more government borrowing.

Driven largely by these factors, the economy will be significantly weaker if Mr. Trump’s economic proposals are adopted. Under the scenario in which all his stated policies become law in the manner proposed, the economy suffers a lengthy recession and is smaller at the end of his four-year term than when he took office (see Chart). By the end of his presidency, there are close to 3.5 million fewer jobs and the unemployment rate rises to as high as 7%, compared with below 5% today. During Mr. Trump’s presidency, the average American household’s after-inflation income will stagnate, and stock prices and real house values will decline.