Tyler Cowen’s latest essay, published by The Free Press, argues that America needs to confront immigration from sub-Saharan Africa seriously and at scale, because the older channels of movement to the United States are drying up. The next wave of migration will not look like the wave that came before it, and the practical mechanics of that shift are already in motion.
Cowen, who says he has held a pro-immigration position since he first began thinking about the subject in the 1970s, notes that the topic has taken on new urgency. The president last week posted on Truth Social that Minnesotans should “fight back” against Somali immigrants he says have “taken over” the state, an intervention that has helped inflame the debate. For Cowen, that moment makes it worth taking a fuller accounting of what African immigration at scale actually entails.
The core of his argument is demographic arithmetic, and it is arithmetic about capacity as much as preference. Historically, immigration to the United States has come from everywhere, most recently from Mexico, to the point that America now has up to 40 million ethnic Mexicans. But that pipeline is unlikely to keep running, and the reason is blunt: Mexico’s fertility rate has fallen to roughly 1.2 children per woman according to one very recent measurement. Latin American nations as a whole frequently now have lower fertility rates than the United States when compared country by country. The conclusion Cowen draws is that peak Latino migration likely lies behind us, not ahead.
What follows from that is a question of where future arrivals will actually come from, and the answer, in his reading, is Africa. Most African nations still have above-replacement fertility rates, even though rates there are mostly falling. In populous Nigeria, the total fertility rate is estimated at 4.4 children per woman, a figure far above what the aging source regions can supply. Africa is also a relatively poor part of the world, which Cowen notes can translate into a desire among people to leave for wealthier and also more democratic countries.
Put these pieces together and what emerges is less a political argument than a logistics picture: the demographic stock from the traditional source regions is depleting, the demographic stock from Africa is not, and the gap between them will shape who shows up at America’s doorstep in the coming decades. The debate, in other words, is not only about values or rhetoric. It is about planning. Cowen’s framing asks readers to think ahead to the delivery of migration at scale, the volume involved and the time horizons, rather than reacting episode by episode to the latest controversy.
That is why the current political noise, heated as it is, reads in his account as premature. The Somalia dispute in Minnesota raises questions about integration and local politics, but Cowen’s essay pushes the frame wider, toward the structural question of how the United States will grow its population over a generation. Whether that growth comes through newcomers or through shrinkage is the decision he believes wealthy countries will eventually have to make.
His closing formulation is stark: at some point, the world’s wealthier countries will have to decide whether they shrink in population or admit sizable numbers of migrants from Africa. For the United States, that decision is no longer hypothetical. The flows that historically supplied American growth are tapering for reasons no policy can reverse, and the flows that could replace them are measurable today. The task, as Cowen presents it, is to take them seriously before the debate about them overwhelms the planning they require.