God has not called us to be responsible for setting up a Theocracy within America or the World – Christ will take care of those things at His return; and since the Lord is sovereign, nothing is outside of His control.
He does expect a Christ-like Theocratic rule within the believer’s life and the church – for He alone is God.
“And Jesus answering said unto them, Render to Caesar the things that are Caesar’s, and to God the things that are God’s. And they marvelled at him.”
Mark 12:17 KJV