My wife is holding H1 VISA and i got H4 VISA through her company. But i’m not travelling now to USA. Now i want to apply for fresh H1B VISA for 2014 March. Is there any added advantage for holding H4? If my H1B VISA approved, do i need to go for stamping or directly travel to USA with H4 VISA and start working in new H1B VISA without stamping?