Transferring RN from Thailand to be CNA in WA

Hi I'm an RN from Thailand and now I'm here in US - WA state, on process waiting to take the NCLEX RN in CA but want to work in hospital as CNA for the experience working in state. So I just wonder if I need to take the CNA classes or training again. I already studied all about clinical even training in hospital also worked as an RN for 2 years in Thailand and I read from somewhere that in my case doesn't need to take any course but just have to make the transcript copy from the college I graduated and go take the test and when I pass I just can apply for some jobs. So if anyone knows about it could you leave me a massage. Thank you very much.