The Catholic Church is warning that President Obama’s bid to promote birth control and reduce pregnancies will push the U.S. fertility rate to a new low, leaving younger Americans with the heavy burden of caring for a growing elderly population — and fewer Catholics.

The U.S. fertility rate now stands at 1.9 births per woman, down from 3.7 in 1960, and the Obama administration is mounting a campaign to reduce “unintended pregnancies” by 10 percent before 2020.