Over the past twenty-five years, NumbersUSA has published numerous scientific reports on the causes and consequences of sprawl in the United States. Our most recent study quantifies ecological decline in the Chesapeake Bay and its watershed over the past three decades. Looking forward, we explore a path toward ecological sustainability centered on stabilizing the region’s population through reduced immigration.
Despite half a century of efforts to improve water quality and restore fisheries in America’s Chesapeake Bay, its ecological health continues to decline. A new study from NumbersUSA quantifies this ecological decline within the Chesapeake Bay watershed, explores its causes, and discusses possible futures.
Overall environmental conditions in the United States deteriorated in 2025, as the nation continued to add more people to already overburdened ecosystems. As the U.S. population reaches 345 million, the country’s environmental problems increasingly reflect a basic mismatch between human numbers and ecological capacity.
Politicians across the political spectrum agree that America has a housing crisis. Home prices and rents have surged beyond what many households can reasonably afford.
While business journalists and housing experts tend to focus on supply, the demand side of the equation is equally important in determining housing prices. When the number of families grows faster than the number of housing units, competition for existing housing increases and prices rise. This has happened in many parts of the country over the past four years, due to immigration-driven population growth.
Two thirds of Arizona’s population growth between 1982 and 2017 was due to immigration into the state, both internationally and from Californians fleeing crowding and the high the cost of living.
Will Colorado politicians continue to support open borders and sanctuary policies, and will Colorado voters support them? Or will the pendulum swing back toward enforcement of our immigration laws and reasonable immigration numbers? Let’s hope it’s the latter
“We may be dealing with NEGATIVE NET MIGRATION to the United States in 2025!” exclaimed chief data analyst Harry Enten, in a recent report on CNN. “That would be the first time there is negative net migration in this country in at least 50 years — we’re talking about down from 2.8 million in 2024.” … Continued
Recent Immigration Surge Has Been Largest in U.S. History, boomed an article in the New York Times last year. Net immigration levels under the Biden administration averaged nearly two and a half million annually. This drove the highest U.S. population growth in decades, according to the Census Bureau, putting us on pace to nearly double … Continued
Editor’s note: this is an edited version of a longer article by Rob Harding and Leon Kolankiewicz. From the Everglades to the Arctic, rampant development and a surging human population threaten America’s protected areas. A recent study from NumbersUSA, Greater Yellowstone: An Ecosystem at Risk, documents this for what has been dubbed “America’s Serengeti”: the … Continued
