Working to US from UK

Anyone can give me advice regarding the situation of nursing job there in the US. I am currently working here in the UK but I've got yhe job offer to work in one of the states in the US, but i am a bit worried now as one of my friend who lives in Hawaii told me that I am not in the right time in applying to work in the US because of the global recession. Do you think that I should worry to much now? To live here in the UK is very expensive with all the taxes that the government deducting in our salary is just too much. This is one of the reasons why i decided to apply to work in the US. I know it will take long time to process all the papers for immigration but do you think it is still advisable to go there to the US and work there as an RN?

Is it safe to work in NON-PROPIT HOSPITAL? Do you think it is stable? Please give me some informations and advice regarding this matter.