[AndrewC]

I've made no "additions" to the Constitution.

Is separation of church and state prescribed by the United States Consitution or not?
Yes. 'Separation' is in effect directed [prescribed] in three different places. --
States are directed to have republican forms of governments, [no theocracies allowed].
- No religious tests for office are to be allowed.
Nor are laws to be made that respect any of the establishments [teachings/precepts] of religion.

Your little bracketed additions are precisely additions to the Constitution presented so as to bolster your argument. The fact that you had to add them militates against your argument.

[P_A_I]

"Is separation of church and state prescribed by the United States Constitution or not?"

Yes. 'Separation' is in effect directed [prescribed] in three different places. --
States are directed to have republican forms of governments, [no theocracies allowed].
- No religious tests for office are to be allowed.
Nor are laws to be made that respect any of the establishments [teachings/precepts] of religion.

My [bracketed] comments help to explain my argument.. Except to those, like you, who oppose our religious freedoms. You are your own worse enemy.