He strongly opposed legislation introduced in 2010 by the Argentine Government to allow same-sex marriage. In a letter to the monasteries of Buenos Aires, he wrote: "Let's not be naive, we're not talking about a simple political battle; it is a destructive pretension against the plan of God. We are not talking about a mere bill, but rather a machination of the Father of Lies that seeks to confuse and deceive the children of God." He has also insisted that adoption by homosexuals is a form of discrimination against children.