There are five regions. The fact that several of the folks behind Rimjob voted for Senator for a region they claim doesn't exist speaks volumes.
Yes, it speaks volumes as to our understanding of the legislation that was passed. The geographical area that was formerly governed by the government of the Pacific Region still exists, and it still elects a Senator in accordance with the Constitution. It merely has no regional government. The difficulty that people seem to have comprehending this is baffling.
It is administered by the IDS government.
Exactly so. While for federal purposes there are still 5 regions, there are two that are administered by the IDS. I admit the topic is a bit showy and not wholly representative of the real situation, but that's an Atlas tradition.
On another note, as AdamGriffin so intelligently pointed out elsewhere, even if clause 1 (the part focusing on the militia) has run into a bit of trouble with the Emperor's statement clause 2 of the passed bill (the "annexation" part) still applies.