Complex sentence: The election of Joseph Cardinal Ratzinger to the Papacy caused an immediate response from New Ways Ministry, which was likely due to Pope Benedict XVI's history of having been particularly' nonnegotiable' on orthodox views in regard to homosexuality.
Split into simpler sentences: The election of Joseph Cardinal Ratzinger to the Papacy was an event that caused an immediate response from New Ways Ministry. This response was most likely due to Pope Benedict XVI's history of having been particularly' nonnegotiable' on orthodox views in regard to homosexuality.