如何查询美国签证状态？
F1状态： 如果是已面试的，一般会在两个工作日之内得到结果. 下面是各种情况的英文解释： Incomplete file means that the information you provided in your application has not been submitted to the United States Citizenship and Immigration Services (USCIS) office for processing. Please contact us as soon as possible if there is any missing document or update we need from you， because without it our agent cannot submit a case with an incomplete file.
If USCIS has received all of the requested documents， an interview is scheduled within two weeks after filing. If required by law ， USCIS will notify us before conducting an interview at their offices. The applicant may be asked to appear personally at his/her own expense to answer additional questions related to the immigration petition. After the interview， he/she may receive notice regarding the approval or denial of request. A Form I-797C Approval Notice can be located on our website once available from USCIS. You are advised to check this web page regularly until a final decision is made. Once adjudicated，the status of each individual’s case can be monitored by logging onto the USCIS Online Status Check System， where you should enter the case number found on the approved Petition For Alien Fiance(e) or Petitioning Relative form I-129f， or the approved Immigrant Visa Petition form I-130. This system enables applicants to determine which consular office is responsible for visa processing based on the country of birth of the beneficiary; provides current visa application status information， including whether or not documents have yet been accepted for processing；and informs applicants when they can pick up previously submitted forms from our office rather than requiring them to re-submit these same documents again with subsequent filings. Applicants who wish to track the progress of applications filed under sections 204（i）or 204A of the Act must use the Department of State's DS-160 Online Nonimmigrant Visa Application system.
Pending means that USCIS has either acknowledged receipt of the petition in the mail but has not made a decision one way or another， or that a decision has been taken but the paperwork is still making its way