以下是官方的说法:The Embassy or Consulate at which you actually apply should be able to access your form using the barcode on your DS-160 confirmation page， which you must bring to the visa interview. For example， a business traveler intenDS to apply for his visa at the U.S. Embassy in City X， so he selects City X as the location where he will submit his application when he completes his DS-160. He then has an urgent reason to travel to City Y on business. Because there is a U.S. Consulate in City Y， he schedules an appointment for a visa interview there， using the barcode from his completed DS-160 application for appointment scheduling. The U.S. Consulate in City Y is able to accept his DS-160 even though it lists the U.S. Embassy in City X as the location where he originally intended to submit his application.
所有指导文件会有后期老师在群内或者单独发送给学生。建议有条件的可以去北京，因为北京现在窗口较多，处理起来很方便，我们前途的孩子们有不少case在北京都过签了，甚至问的问题也较为简单，所以北京现在是首选。
到了目前这个阶段，相信大部分2023Fall的同学和心仪的大学之间，只隔了一个“F-1”签证，但是美签办理起来也是千头万绪让人头大，所以我们特地总结了这篇关于美签全流程尽可能简洁但绝对详实的介绍，供各位同学参考。
