And this is an excellent example of reporters turning off their brains when they get a chance to parrot liberal propaganda.
1300 deaths since 1990 is about 100 deaths a year. There are about 4 million live births in the US every year.
How ignorant about basic mortality tables would you have be to believe that 100 deaths in a population of more than 4 million could possibly be the "leading cause of death"?
The population isn't 4,000,000 but rather consists of those pregnant women who die.