Who's supposed to do the Great Commission? Christians or the government?

Who’s supposed to do the Great Commission? Christians or the government?

Every Christian should know what the Great Commission is.  And pretty much everyone in the U.S. probably at least heard of separation of church and state.  So when someone receives an award for “Selfless and Steadfast Service in the Lord’s Vineyard” I expect them to understand the relationship between the Great Commission and the idea of separation of church and state.

Instead, we read a headline like the one of foxnews.com:

Barr says ‘notion’ of separation of church and state misunderstood because of ‘militant secularists’.