[wouldntbprudent]

Subtitute "her ID was leaked by a person who is under the law" for "Plame was not covert" as being what you refer to as "the threshold element."

Does the mere revelation of her "identity" have any legal meaning?

Is it wrongful for "a person under the law" (by which I assume you mean a person bound to handle certain information within certain restrictions) to reveal the mere identity of person when that identity has no particular legal protection?

If I'm a "person under the law" because I, say, have a security clearance, and I reveal information that in fact is not prohibited to reveal (by anyone), I've still done something illegal?

[Cboldt]

Does the mere revelation of her "identity" have any legal meaning?

I used that phrase as shorthand to indicate a violation of 50 USC 421.

50 USC 421 <- Crime of revealing covert agent

50 USC 426 <- Definitions