(CNN) -- In 2008, our nation broke through a barrier, electing an African-American to be president of the United States.
In 2016, another barrier may very well be broken. All polls indicate that a woman or a Latino has a very good chance of being elected to be our 45th president.
But there is another barrier -- an important one in the eyes of the world -- that is almost certain not to be smashed. Barring an unprecedented political upheaval, the next president of the United States will be a Christian, just like virtually all of his (or her) predecessors. The only exceptions may have been Thomas Jefferson, who abandoned orthodox Christianity, and Abraham Lincoln, who often spoke of God and frequently quoted the Bible, but who never joined a church.
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