Cheney Steps Into Daughters' Gay Marriage Spat

"This is an issue we have dealt with privately for many years, and we are pained to see it become public"

Former Vice President Dick Cheney has stepped into a squabble involving his two daughters over gay marriage.

The feud involves Mary Cheney, who is married to a woman, and her sister Liz Cheney, who is running for a US Senate seat in a conservative state.

According to news reports, the two sisters, who were once close, have not spoken to each other since the summer, and now the feud has spilled into public view.