Are we allowed to go to a Moslem country and change it's songs of faith? Are we even allowed to go to a Moslem country and pray to our own God?
Are we allowed to even say we have faith in the Christian God, in a moslem country?

The answer is NO. So why would the USA, a CHRISTIAN country, be denegrated for promoting the singing of Christian hymns, while still allowing moslem ones too?

Why not go work on changing the Arab countries first, bringing them UP at least to the level of tolerance that we have, before you continue to put my country down.