Here is the official MCS statement:
a) We believe that planned parenthood, practised with respect for human life, fulfils rather than violates the will of God. It is the duty of each married couple prayerfully and responsibly to seek parenthood, avert it, or defer it in accordance with the best expression of their Christian love. b) We affirm that life begins at conception and that the human embryo is not simply a mass of tissue that has the potential. We therefore do not subscribe to abortion except on medical grounds. We call on all Christians to a searching and prayerful inquiry in situations in which abortion may be contemplated and to seek medical, pastoral, and other appropriate counselling. –Discipline¶84