&gt; The state authorizing religious ministers of scores of denominations to officiate marriages in addition to justices of the peace is not, in any sense, an &quot;establishment of religion.&quot;<p>Let&#x27;s consider that a state (nation-state or US state) might
recognize 0, 1, or N religions.<p>There are many nation-states with 1 or N state-recognized religions,
as you point out, but a US state that recognizes any number of
religions other than 0 is effectively, in many senses, establishing 
that set of religions, and excluding any others.<p>Officiating at weddings is a very light-weight form of recognition
compared to tax exemptions, or to religious requirements to hold public office.<p>My preference for the US would be to keep government out of religion,
and religion out of government, keeping that number at 0.