回复：回复：that's wrong. green card is only for a future job

yes, you can have two full time job, but you don't have to do that, like the question/answer I posted, it says if the company who offers you part-time job now is willing to offer you a full-time job at the time of GC approval.then the it can sponser you for GC.
Besides, two full time jobs is just unpractical to most of people