Lpn's in the USA

Hi there,i'm really curious and a little worried at the moment.After reading some threads,i am getting the feeling that lpn's are not being employed much in the US,especially foreign ones.I am a malaysian but a permanent resident in singapore.I have been an male Enrolled nurse or lpn equivalent for 5 years now in a general medicine and cardio ward.I work in Tan tock seng hospital,where the SARS outbreak was first discovered and contained.I am very keen to go to the states to work as a nurse along with my RN wife.She is a philipino,holds a BSN and RN so immigration for her shouldnt be a problem.So my question is even if i were to take up ielts and lpn nclex,there's very little chance for me to be employed in the states,let alone given the green card? Please advise,thanks a million.