I have B-2 visitors visa, and in case I don't have time to do the paperwork for my F-1 visa at home. I'm thinking about coming to the US as a visitor and then while I'm already here, apply for a change of status (to the F-1 visa). Is this illegal, or tricky, or hard to obtain, or will take way to long time, or will cause me legal problems later on, or there's anything about this that I need to know?? UOP takes wayyyy tooo loonnggg to do anything, as a matter of fact they haven't yet released the new prices for this year entering class. And thus we haven't been able to get loan pre-approval, much less get the I-20. So chances are I'll be running agaisnt time in May or June. Also, I've had student visa before (J-1) and have had B-2 visa since I'm a kid, never staying in the US longer than a couple weeks, never doing anything that will make me look bad or suspicious. I thought this info might help you tell my Dx. Rajkang you seem to know a lot about this, what's you "diagnosis" in my case? Anyone else....... Thank you.