-After you file B2 application, you are lawfully present for waiting the B1 approval/denial.
(2)如果我在這3個月內找到工作,可以撤銷B2申請再轉回H1B身份嗎?
-The problem is that if you withdraw/cancel the B1 application, you are considered out of status from the time you lost job to filing H1 application.
我知道我已經有H1身份,就是不占名額了。但是在你遞交了B2 申請以後再轉回H1的話,還可以像H1Btransfer那樣拿到USCIS的receipt 就可以立刻上班嗎?
-If you get B1 status and change it to H1 again, you can not work until your H1 petition is approved. But you can use premium processing to get the h1 approved within 15 days.
(3)如果找到工作,需要離境簽H1B嗎?
-If your h1 approval has an I-94 card with it, you do not need to go outside of US to get an h1 visa. Otherwise, you need to go out of U.S. to get a visa.