Resouces: US Embassy Website 

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การขอกรีนการ์ด โดยผ่านการลงทุน  E5

https://travel.state.gov/content/visas/en/immigrate/employment.html#fifth

 

การขอกรีนการ์ด โดยผ่านการจ้างงานแบบ Employment Third Preference (E3)

https://travel.state.gov/content/visas/en/immigrate/employment.html#petition

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Skilled Workers, Professionals, and Unskilled Workers (Other Workers)

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A Third Preference applicant must have an approved Immigrant Petition for Alien Worker, Form I-140,filed by the prospective employer. All such workers generally require labor certification approved by the Department of Labor. Skilled Workers, Professionals, and Unskilled Workers (Other Workers) receive 28.6 percent of the yearly worldwide limit of employment-based immigrant visas, plus any unused visas from the Employment First Preference and Second Preference categories.

 

There are three subgroups within this category:

1. Skilled workers are persons whose jobs require a minimum of 2 years training or work experience that are not temporary or seasonal.

2. Professionals are members of the professions whose jobs require at least a baccalaureate degree from a U.S. university or college or its foreign equivalent degree.

3. Unskilled workers (Other workers) are persons capable of filling positions that require less than two years training or experience that are not temporary or seasonal.

 

สำนักงานตรวจคนเข้าเมือง USCIS – United State Citizenship and Immigration Services

https://www.uscis.gov/

การนัดหมายกับทาง National Visa Center  (NVC)

https://travel.state.gov/content/visas/en/immigrate/nvc/nvc-contact-information.html

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When you complete a petition (I-130, I-140, etc.) for an immigrant visa, you send it to United States Citizenship and Immigration Services (USCIS) in the Department of Homeland Security for approval. If USCIS approves the petition and you wish to process for a visa outside the United States, USCIS will send you a Notice of Approval (I-797) and send the petition to the NVC. It often takes longer for the petition to arrive at the NVC than for you to receive your Notice of Approval. Please wait up to six weeks after receiving your Notice of Approval before contacting NVC. Once we receive your petition from USCIS,

we will give it a unique NVC case number and send you a letter notifying you that we have your  petition and what to do next

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การยื่นขอสัมภาษณ์วีซ่า ถาวร DS 260 ณ สถานทูตอเมริกา ประจำประเทศไทย
https://ceac.state.gov/IV/Login.aspx