A few weeks ago the Nobel Prize Committee announced the latest round of Nobel laureates for 2016. Seven Americans were named to this high honor—and six of the seven were immigrants, born outside of this country.

Immigration is frequently a hot topic during an election year, this one perhaps more than most. On the one side, we are told that immigration is costing us jobs, lowering our wages, and causing more crime. On the other side we are given a moral argument, that we are a nation of immigrants who should welcome others into our melting-pot culture as we have welcomed those who came before.

We set aside the moral side of this debate; while we occasionally dip into moral philosophy, this blog concerns itself chiefly with practical matters of economics. And as a practical matter, there are very good reasons why we should appreciate the value that immigrants bring to our country, above and beyond whatever Nobel prizes they may win.

As a country we are facing a demographic crisis. Since the 1970s, we have been having noticeably fewer children per family than we did previously. As our generation reaches retirement age, record numbers of Americans are leaving the workforce. I still plan on working until I’m 92—but many of my contemporaries have other plans. As we leave, there are more openings left behind than we have children and grandchildren to fill.

This demographic wall creates a major drag on the economy: we want to grow our economy faster, but we simply don’t have enough workers to do it. For the past year we’ve seen the unemployment rate hovering at 5% and below. Even as the economy recovers and we start to add jobs, there’s going to be a very real question as to who will be filling them. The workers simply aren’t there. To some extent this is a regional issue—some of our employment woes could be fixed by having job-seekers move from economically depressed areas to thriving areas where jobs are being created too quickly to fill. But not everyone can uproot their lives for work, and where people cannot or will not relocate, the only alternative is to import workers from elsewhere.

Ours is not the only country facing this demographic crisis. We need only look at Japan, Europe, and other parts of the developed world to see what happens when an aging population is not replaced. Many first world countries have a lower birth rate and lower immigration rate—and, not coincidentally, lower GDP growth. We would do well to learn from their example what not to do.

This is not to say that we endorse open borders or encourage illegal immigration. We are a nation of law. We should have sensible laws that are enforced in a fair and even-handed manner. But to suggest that we should slam the door shut on immigrants is to ignore the economic reality we face. One of the best and surest ways to expand our economy is to add new people to it—and we will need to, if we wish to continue growing at a reasonable rate.

The opinions voiced in this material are for general information only.