Like the Pill it also functions to prevent or end a pregnancy in three ways.

Review of "Does the Birth Control Pill Cause Abortions? by Jed Stuber

...it has become glaringly apparent that now is the time for us, as an organization, to sail into the dangerous and uncharted waters that we have, perhaps intentionally, avoided.  These are the “waters” of prolife principles as they relate to fertility control.