Canada and the US are different countries. Your immigration status in Canada does not give you any immigration benefits in the US. You cannot LEGALLY work in the US as either a Canadian PR or even a Canadia citizen. If you want to work in the US, go apply to the US for whatever visa you qualify for
Yes u can work on work.visa From usa...but one thing....u r PR holder to keep ur residency live. ..u have to stay in canada 735 days to renew ur PR card in 5 years....keep.in.mind...