How to justify neutral positions on redefining marriage....

• USCCB: ""No religious exemption- no matter how broadly worded- can justify a supportive or neutral position on the redefinition of marriage (see CDF, 1992, no. 16). Such 'redefinition' is always fundamentally unjust, and indeed, religious exemptions may even facilitate the passage of such unjust laws. Protecting marriage protects religious liberty; the two are inseparable." http://www.marriageuniqueforareason.org/religious-liberty-faq/
• "Silence remains the most popular position among congressional Republicans"

Other Reading:

• All the pro-life facts about hormonal contraception (that you probably don’t want to hear) - Part I (Abby Johnson)
•  The American Life League's "Defend the Family Campaign"
• The Gospel of Indissolubility: Yet again, we desperately need to be called back to a proper understanding of marriage