Liz Cheney stopped by Fox News today to talk about her opposition to gay marriage, an appearance that drew the ire of her gay, married younger sister Mary and her wife Heather Poe, who denounced Liz as "wrong — and on the wrong side of history."

This morning, Liz appeared on Fox News Sunday, saying “I love Mary very much, I love her family very much... This is just an issue on which we disagree.”

In response, Mary's wife, Heather Poe, posted a public Facebook status addressing Liz's statements.

I was watching my sister-in-law on Fox News Sunday (yes Liz, in fifteen states and the District of Columbia you are my sister-in-law) and was very disappointed to hear her say "I do believe in the traditional definition of marriage."

Liz has been a guest in our home, has spent time and shared holidays with our children, and when Mary and I got married in 2012 - she didn't hesitate to tell us how happy she was for us.

To have her now say she doesn't support our right to marry is offensive to say the least

I can't help but wonder how Liz would feel if as she moved from state to state, she discovered that her family was protected in one but not the other.

I always thought freedom meant freedom for EVERYONE.

Mary then shared her wife's status, adding, "Liz - this isn't just an issue on which we disagree - you're just wrong - and on the wrong side of history."

The elder Cheney is currently running for a Wyoming Senate seat against moderate incumbent Mike Enzi.

[h/t Jim Newell, image via AP]