I will keep my Christian denomation to  myself.  As far as it being up to me to decide who is Christian, Jade is right, it is not up to me.
Also, I believe very strongly our Constitution makes it very clear this country is not of any particular religion.  The USA is a republic not a theocracy.  For those who want to force their religious beliefs upon others in this great nation, I suggest they relocate to the Middle East where theocractic governments seem to thrive.