He wrote about the vice president's pregnant, lesbian daughter in a Time magazine essay in December. Here's part of what he said:
"With all due respect to Cheney and her partner, Heather Poe, the majority of more than 30 years of social-science evidence indicates that children do best on every measure of well-being when raised by their married mother and father. That is not to say Cheney and Poe will not love their child. But love alone is not enough to guarantee healthy growth and development. The two most loving women in the world cannot provide a daddy for a little boy - any more than the two most loving men can be complete role models for a little girl."
In other words, fathers matter, something we seem to have forgotten, so busy are we pretending that women and men are interchangeable.