[Conservative til I die]

For the same reasons everybody else does. Why does the Pope reqire a specific color of clothing for specific people?

It's called diplomacy. I'm sure you don't have issues with the idea of etiquette when meeting dignitaries and heads of state. Of course unless they're Catholic, right? C'mon, be honest. It'll be our little secret.

[William Terrell]

Dignitaries and heads of state make no claims of ecclesiastical dominance. The Vicar of Christ on Earth should adopt the same attitude of his Master, don't you think?