[Taipei]

Pompeo is not appointed under the VRA, he’s nominated to the post as per usual procedure and is subject to Senate consent.

[AndyJackson]

Exactly. There is no vacancy until Tillerson leaves his post.

[Cboldt]

-- Pompeo is not appointed under the VRA, he's nominated to the post as per usual procedure and is subject to Senate consent. --

Technically, he hasn't been nominated for SoS at all, not yet. But lets assume for the sake of argument that he will be - a likely event, IMO.

What will Pompeo's post be, between the time Tillerson leaves the SoS post at midnight, March 31st, and the time Pompeo is confirmed as SoS?