回複：我B1轉F1，再轉H1，如果回國簽H1是否可以？

H1 seems the easiest visa to get. However, chance is somebody got denials or background check. Most people I know got their visas, no matter in what categeory, F, J, H, O, L. But I did hear a few denials. There seems no rationle behind it. Nobody can gurantee you a visa. Generally, if you ever change your status in the US, VO may doubt your credibility. Same is true in third country. In addition, there is a three years old rule regarding third country visa.

Found the following at immigration-law.com

Updated 06/17/2002: Termination of Automatic Visa Revalidation and Conoff and INS Inspector Actions

According to the U.S. Department of State recent cable to visa posts in the contiguous countries, the following steps should be taken by the officers to ensure that the termination of automatic visa revalidation is strictly enforced for those who go to the American Consulates in Canada or Mexico with a valid I-94 but without a valid visa and apply for the visa. Once the visa application is denied, such person is not supposed to be admitted to the U.S. The two steps are as follows:
When the visa is denied, the Conoffs place a "Application Received" stamp at the end of the passport. However, the immigration inspectors can overlook this stamp in haste. To help ensure INS inspectors at the port of entry do not overlook the "Application Received" stamp and inadvertently apply the revalidation regulation to aliens who are in fact not qualified for such treatment, INS has requested, and the U.S. Department of State has agreed to, the following two additional steps:
-- First, consular officers are required to collect any valid I-94 in such cases, mark the back of the I-94 with the date and post name (the "Application Received" stamp can be used for this), and return the form to INS.
-- Second, if the consular officer is unable to collect the I-94 because the applicant claims it was lost, stolen, or turned in to INS, the "Application Received" stamp should be placed next to the expired visa or, in the case of a prior change of status, next to the most recent unexpired visa in the different category that might otherwise be erroneously converted and revalidated if the INS inspector were unaware of the alien's intervening visa application. This stamp is in addition to the stamp that must be placed in the back of the passport, as required for all visa refusals. Back to Top