USA is not a Christian nation by strict definition. We have some of the highest Jewish, Muslim, Hindu, Buddhist, you name it populations in the world.
We are though a Christian nation in every other sense.(basis of law, etc)
The President of the USA should not be denying what the USA is in order to pander to the beliefs of another part of the world.
Overall its a continuation of Obama policy 101.
"Talk Big and carry a toothpick"