By that statement, countries should only consider governing born citizens.  If only people born in a country are citizens, you avoid placing the government into the impossible position of trying to decide  whether a fetus is some amount of human being, or not.  I believe that demanding born citizenship is really the only way any country can rule with every citizen being treated equally.  Otherwise, a definite citizen, if she is a women, is being mandated to do with her body what no man is ever mandated to do which is not same treatment or equal treatment.

In this case, women are then made slaves to what the state has decided, without adequate evidence, is a full human being, & that this internal being has rights, to use her body, for its own purposes without her consent.  This mandates that a woman's life & freedom are second to the internal being's life & freedom.

Countries which restrict abortions usually have higher rates of abortion. A good reason to avoid  legislating morality.