The Pope was unwise to put it this way.
The wrongness of abortion and same-sex marriage are NOT matters of “Church teaching,” and need NOT be discussed only in the context of “Church teaching.”
The wrongness of both is knowable through an understanding of NATURAL LAW.
By insisting that they must be discussed in the context of “Church teaching,” the Pope has undermined the pro-life movement.
http://www.thecatholicthing.org/columns/2013/reading-the-natural-signs.html
Thank you for the link. Bookmarked!