America has NO established religion. Thus, it is not, and will not become, a Christian or any other type of theocracy.
To name it such is to by default relegate any other religions, as well as those who practice nop religion at all, to a second-class status, which is one of the reasons why the government was prohibited from establishing a religion.
The words "Christianity", "Christ", "Jesus", et. al., appear NOWHERE in the Constitution. Period. Furthermore, the tenets of representative government and law come to us NOT from any modern Church, but from the ancient Romans (Pagans all) and the Greeks (ditto).
This is getting tiresome. No one is telling anyone they cannot practice their religion. They simply cannot use government (taxpayer) funds to do so, nor can they make the government recognize any one religion as "superior" in any way. For this one descision, there are hundreds to the contrary across another century.
What is so hard to understand about this?
Being led by christians doesn't necessary mean a group/organization is christian itself.
(Art. VI, para. 3) The Senators and Representatives before mentioned, and the Members of the several State Legislatures, and all executive and judicial Officers, both of the United States and of the several States, shall be bound by Oath or Affirmation, to support this Constitution; but no religious Test shall ever be required as a Qualification to any Office or public Trust under the United States.By allowing "Oath [religious] or Affirmation [non-religious]," they clearly recognized that atheists and other non-Christians had a place in the government and protected their right to be there.
People forget, this may be a nation of mostly Christians, but it is not a Christian nation. It is probably that distinction that has done us so well, allowing the good parts of Christianity to help maintain a good society, while constitutionally preventing the power-hungry, intolerant blood-lust that usually comes with a truly Christian nation.