I love Campbell and Putnam's American Grace. My hope is to replicate something like it for Chile some day. There is no question that in Chile, as in the US and elsewhere, religion continues to play an important part in politics. Recent events in Egypt are the most recent and depressing example.
The tension is between the desire to create (or maintain) secular politics while not decreeing secularism in all of society. Many people want to hold on to their beliefs. As I say in this piece, the only way to do so is to understand, as Jacques Berlinerblau has written, the difference between secularism and atheism.