America’s overshoot is magnified by mass immigration
Americans have grown increasingly efficient with our use of resources (i.e., our per capita ecological footprint). But we haven’t grown more sustainable — that is, the U.S. ecological deficit (gap between footprint and biocapacity) has increased — because the amount of natural resources (i.e., our biocapacity) per person has also declined. Why? In part because we have converted them into urbanized areas to accommodate immigration-driven population growth.