Haha! That is a strange coincidence indeed but not altogether surprising given the subject matter. It's possible someone read your post and submitted it.

Just to clarify, raphman did post his link before it was submitted as a story should anyone be wondering once this moves out of the resolution of a day.

  raphman 7 hours ago
  [link]

  Defending Privacy at the U.S. Border...
  144 points by llambda 5 hours ago

Probably not coincidence: https://hackernews.hn/item?id=3497285

Thanks for the link. I have added my view over there.

Thanks for pointing out the limited time resolution.