Biden has served as one of President Obama's informal religious advisers on matters concerning the Catholic Church, including the debate over contraception last year under the administration's new health-care law. During the vice presidential debate against Rep. Paul Ryan (R-Wis.) last year, Biden said he did not believe in imposing his personal view on issues such as abortion on the rest of the country.
"My religion defines who I am," Biden said. "Life begins at conception. That's the church's position. I accept it in my personal life. But I refuse to impose it on equally devout Christians, and Muslims, and Jews."
This post has been updated.