The Hadean. Hadean time (4.6 to 4 billion years ago)* is not a geological period as such. No rocks on the Earth are this old, except for meteorites. During Hadean time, the Solar System was forming, probably within a large cloud of gas and dust around the sun, called an accretion disc.
Posted. Yes, employers can revoke/cancel the approved I-140. However, if you read Murthy's bulletin (2nd last) then you'll notice USCIS has made it clear that even employer cancels I-140, you can retain your PD.You can change employer anytime after I-140, there is no such waiting period.1  Back to top.osted. Yes, employers can revoke/cancel the approved I-140. However, if you read Murthy's bulletin (2nd last) then you'll notice USCIS has made it clear that even employer cancels I-140, you can retain your PD.
Thank you. As long as the I-140 has been approved it doesn't matter if the old employer withdraws the petition. That would be like slavery. See this USCIS Memorandum and it discusses exactly this situation regarding porting after the approval of the I-140 when the employer withdraws the petition. http://www.uscis ....herefore, even if the employer withdraws the approved petition for purposes of AC21 the petition remains valid and you can port off of it to a new employer into the same or similar occupational classification.