H1 to H4 COS in US,
What are the documents needed for filling H4 within US?
My wife is on H1 and I’m on H1B and my visa expires in 3 months and I’m planning to change to H4 as dependent as I’m not sure if my perm gets approved by then. she has an extension for her H1B in nov which will be filled in May '16. Can I get my h1 to H4 COS done in April (prior) or should I wait till May and file my h4 along with her extension done through her employer. Thanks