Do you believe in sin?
What is sin?
Being out of alignment with my values.
I don't know about you, dear reader, but the concept of sin in Christianity is the opposite of what Obama says. Sin is being out of alignment with God's values, not being out of alignment with human values. Being out of alignment with human values is a sin against secular humanism, not Christianity.
That is, unless Obama is claiming to be the Second Coming, in which case, sin would be a lack of alignment with Obama-values.