I moved with a job (transfer with current employer) and full expat package. But most US employers won't consider you without you being in the country, even if you do have PR. What do you do and whereabouts are you moving to?
A lot of people have put job hiring on hold until the election, so it may improve after that.
It's surprised me how expensive life in the US is, so even if you do find a job, bring a lot more savings than you think you'll need!
Good luck.