"U.S. fertility rate for 2025 is 1.79, a 0.06% increase from 2024."

https://www.macrotrends.net/global-metrics/countries/usa/united-states/fertility-rate

In case anyone was wondering the the replacement fertility rate, which is the total fertility rate needed to maintain a stable population without net migration, is approximately 2.1 births per woman in most developed countries, including the United States, assuming constant mortality rates and zero net migration. So in other words people have stopped breeding to the point where the population is now in the decline. As for leftists being the ones who mostly are choosing to not have kids, that's just natural selection cleaning out the gene pool.