As posted in the immigration-law the AC21 regulation has not been released and enacted. So how does switching to a similar job after 180 days (ND +180 or RD + 180 whichever it may be)considered to be allright if the there are no regulation for the law. Is it just that all of us have interpreted the law to suit our convinience and set up out own regualtions and following it or is there sonme legal aspect to it. Since the above mentioned website explictly states "AC 21 regulation has yet to be enacted and released".