I am a Phd student(with full funding) about to graduate in November 2011 after which I'll apply for the 12 month OPT. My husband, 27, is preparing to apply for a F2 visa. He is currently working in a MNC in india. Could anyone tell me as to wether it would be appropriate for him to apply for a F2 visa or a visitors visa? We are a bit uncertain about which one of these visa categories should he apply as I only have few more months of schooling. Also, please let me know if there is any time limit within which my husband should travel to US if he is granted a visa (either category).