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.

If federal immigration policies driving national population growth continue, California's environment and residents' quality of life will pay an ever higher price. There can be no sustainability in a context of ever growing human populations.

Road salt causes long-term water contamination. Mass immigration expands roads and salt use. Population growth makes the damage unavoidable.

The border is secure and illegal migration is down. So, do we still need to be concerned about immigration? The answer is an emphatic yes.

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.

For decades after the Clean Air Act (1970), new emission standards, cleaner fuels and technological innovations brought steady air quality improvements to America's metro regions. But those gains have since stalled, as population growth, with its traffic expansion and rising energy demands, overwhelms the benefits of air pollution controls.

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.

Each Thanksgiving, we say we're "going home for the holidays." But more and more, it feels like we're running the gauntlet through an endless traffic jam. The culprit? Rampant population growth.

Our nation’s immigration-driven population growth is fueling urban and suburban expansion, which has become the principal factor contributing to deforestation in the United States. As development spreads outward irreplaceable forest functions are lost, leaving communities more vulnerable to flooding, pollution, extreme heat, declining biodiversity and declining quality of life. Unless excessive immigration rates are reduced, urban sprawl and deforestation will continue.