Is it a sin for me to attend our Catholic daughter's wedding being performed in a Protestant Church?

My daughter and her fiance don’t want to wait for his annulment before getting married, so they are considering getting married in a protestant church now and later having their union blessed. I know, and they know, that this is against Catholic teaching. Is it a sin for me and my husband to go to this wedding?

The following links should assist you in understanding some guidelines for discerning whether to attend your daughter’s wedding. If you have any further questions or concerns that are not answered by these links, please contact Catholic Answers directly.

Recommended Reading:
What are the rules for attending weddings?**
]* Why doesn’t the Church forbid Catholic attendance at invalid marriages?**

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