謝謝你的回答
Unlike H1B holder who can be allowed to work for up to 3 years at a time, H1B1 holder may be allowed to work in US for up to one year at a time, but you can extend your H1B1 status before your H1B1 I-94 expires or change your H1B1 to H1B.
這樣說來是不是每年都要續簽?持有H1B1簽證的最多可以工作幾年?
是不是必須在一年後當簽證需要續簽的時候就可以要求換成H1B?
還有這一年的簽證可以多次自由出入美國(比如出差)而不需要重新簽證嗎?
再次感謝耐心的回答。