But American jobs are disappearing not because they’re moving to Mexico or China; it’s because they are increasingly being done by robots. What we need is not tariffs, but training. We also need to gently teach our children: You might prefer to stay in the house you were born in all your life, but it’s not a constitutional right.

My family had to move because there was no future in rural Gujarat; 200 years of British colonialism had left the Indian economy in ruins. When we moved, we missed our vegetarian food, our family, the trees, the rivers and our language. Some of it we could take with us; some of it we couldn’t. We returned to Gujarat when we could.

Americans are more fortunate; the whole world looks like America now. Americans who emigrate don’t have to go without cheeseburgers, “Seinfeld” or the English language.

So go forth into the world with confidence, young American! Don’t believe Mr. Trump’s defeatist talk of “American carnage.” Americans have a spirit of enterprise, efficiency and honesty that is unparalleled in the world. If you don’t believe me, try visiting a Chinese or Indian or Russian government office — and see how an American government office compares.

Some of my former New York University students were able to land lucrative jobs in the booming Indian news industry because they have writing and editing skills honed at a top American university. In India, their salaries can buy them an apartment, nice dinners, domestic help. Most of their peers in New York are still struggling in unpaid internships and have to be supported by loans or parents.

For my college-going sons, there is no guarantee that there will be a job waiting after graduation in America. But they have already worked, with confidence, in Brazil and Indonesia. Growing up in New York has made them comfortable with the idea of living anywhere in the world. The other day, my older son, who wants to be a journalist, told me he was thinking about looking for a job in … India.