Evidence
Good point. Here's a real life experience on this issue:
My family was from '58-'70 a part of the Columbia Heights Congregation which met downstairs in Brooklyn Bethel. Because it was so convenient for the members of the Governing Body we were used to seeing them at meetings when they were in town. Mostly, though they were gone, often on international trips which they wold occasionally tell us about.
In 1960 I graduated from high school in NYC. In those days all graduating seniors were required to sign a loyalty oath to get the diplomas they'd worked for. Hayden Covington, the Society's Constitutional lawyer wrote a letter on my behalf to the Board of Regents in order for me to get my diploma without having to take that oath.
Imagine how I felt when not long afterward I applied for a passport and found every American was required to sign the EXACT SAME LOYALTY OATH in order to receive a passport! I knew then that every American on GB (all but 1-2 in those days) HAD TO HAVE SIGNED that very oath that signing would have once described "disloyalty to Jehovah's Kingdom Government".
BTW, I DID sign the oath and I DID get my first passport. Never again did I put my trust in the WT's 'do what I say, not what I do' twist on "Truth".
Today, older and wiser, I suspect that I was selected by the Society and Covington for convenience, hoping to make a federal case out of this oath. (There must have been hundreds of other JW's graduating at the same time, but none lived as close to HQ! as I did.) It was wise of the board to mail my diploma without comment.
http://watchtowertruth.blogspot.com/2008/10/why-cant-jws-pledge-allegiance-to-usa.html