Donald Trump’s vision of a white America is slipping further out of reach. Despite aggressive immigration policies and deportations, the “white paradise” he promises his base cannot be restored. The non-Hispanic white share of the population is shrinking and will continue to do so, no matter what policies are enacted. Trump can attempt to restrict immigration, but the U.S. population is already changing. In 1960, 75% of immigrants came from Europe. Today, fewer than 10% do, while more than half hail from Latin America. In 1964, non-Hispanic whites accounted for 90% of the U.S. population. By 2024, that share fell to 57.5%, and it will keep declining. Over the next decade, the Census Bureau projects the non-Hispanic white population will lose nearly 11 million people. By 2100, it could shrink by more than a third. Even if immigration were halted completely, the population would not return to the past. A smaller population would age rapidly. Currently, people over 65 make up one-fifth of Americans. With no immigration, their share could rise to one-quarter by mid-century and more than one-third by 2100, while the workforce shrinks. This demographic squeeze could weaken the economy and make the U.S. less resilient globally. The Trump administration has suggested boosting fertility to offset the decline, but such measures are unlikely to succeed. Birth rates in the U.S. have fallen to 1.6 children per woman, below the replacement rate of 2.1. Proposals like “National Medals of Motherhood,” fertility tracking classes, and $1,000 deposits into “Trump accounts” for newborns are unlikely to reverse the trend. Meanwhile, cuts to federal support for children’s healthcare and nutrition make having children harder, not easier. Demographic experts note that falling fertility is a global phenomenon. Even in countries with strong family policies, such as childcare support and child benefits, birth rates have not returned to replacement levels. Non-white immigration remains the most practical way to maintain population growth and economic stability. Under a high-immigration scenario, the U.S. population could grow 13% by 2050 and 28% by 2100. The share of people over 65 would not reach one-quarter until 2070. Yet in this scenario, the non-Hispanic white share would shrink even faster—from 58% today to under 47% by 2050—while the Hispanic population would grow from just under 20% to nearly 26%. Trump’s vision of a white America is impossible to achieve. Demographics are reshaping the country, making it more diverse and older. To sustain economic growth and national stability, the U.S. will rely on immigrants—precisely the groups Trump has often disparaged. The irony is stark: if the U.S. is to remain “great,” it must embrace a population that is increasingly brown, young, and dynamic.