如果三周后状态仍然是Your visa case is currently undergoing necessary administrative processing,那么可以:
1)给签证的使馆打电话或发传真
2)给签证的使馆写电邮
3)在签证预约账号中,“提供反馈”一栏,在线提交反馈
4)给美国国务院Visa Services, Public Inquiries Division打电话问进展
5)给美国国务院Student/Exchange Visitor Visa Center写邮件:fmjvisas@state.gov
6)如果开学日期临近,而签证状态仍然是Your visa case is currently undergoing necessary administrative processing,则需要联系学校,阐明原因,请求延期入学,重发录取信及重发I-20等