怎么才能获得M1签证？
M1 移民签证，全称是 Immigrant visa M. I-485 application for adjustment of status (移民局申请调整身份) 是由美国公民或者永久居民为申请人填写的，所以M1签证持有者一般被称为M 1A or M 1B （取决于其申请人）。
M1 是移民签证，所以可以入境美国后等待面试或者登陆后直接递交I-485。 但是不是所有移民申请者都能拿到M1签证。 下面详细分析下什么人可以拿到的M1移民签证和怎么申请。 一、申请类型 A. C2： conditional two year admission，两年有条件入境许可(C2允许在美国停留两年并可以申请M1移民签证或I-485调整身份，但是不能在入境美国前申请I-485，必须在入境美国的海关时提交I94 form ) B. I539 ： Adjustment Of Status(I-485)，申请人在美国境内申请移民身份调整，通常需要在申请时提供I751宠物文件(Petition To Classify an Animal as a Pets and to RegisterQualifying Dogs)(非移民身份的狗需要这个文件才能转为移民身份，如果申请人为孩子则不需要)以及 I-807 Removal of Conditions on Residence and Nonimmigrant Status 申请。 二、满足条件 以下四个条件必须同时满足才能获得一个M1移民签证：
1. I-130 表格已经由美国公民提出并获得批准(Citizenship And Naturalization Services， USCIS)， 此表格主要用来申请移民名额; * Note： For family based immigration cases the I-130 can be filed before the immigrant reaches his/her 18th birthday， but not after it if he/she is still underage (i.e. less than 18 years old); this means that in most cases filing an I-130 doesnt require you to have entered into the USA legally， which also applies to employmentbased petitions (I-140)/requests (I-129) . However ， all beneficiaries must obtain valid travel documents so they can travel safely while their petition is pending. The approved I-130 should include information such as：
● The name， date of birth， sex and nationality of beneficiary；
● Name， address， phone number and signature of petitioner；
● Relationship between petitioner and beneficiary；
● Purpose of immigration petition， i.e. for permanent residence or temporary resident visa. If applicable， information about the category or preferences applied by petitioner shall be provided too. Examples： preference category， marital category etc. Note： In certain situations， there could be more than one beneficiary for each I-130 filed. Each person needs to apply separately when getting their visa. It would then become an M1A visa， where the first applicant was listed at the top of page 1 of Form I-130 ， whereas subsequent applicants are noted on separate pages below them.
2. An Immigration Petition With Approval Notice Or Final Order Has Been Iss