In certain cases , " visitor " visas can be issued to applicants who want to go to the united states to volunteer with a religious or non - profit charitable organization in order to assist the poor or the needy or to further a religious or charitable cause 在某些情况，申请人可以使用观光访问签证去美国从事宗教义务工作或为非牟利的慈善机构辅助贫穷。无论如何，此工作项目不可牵涉买卖交易和或恳求捐款或接受捐献。
Please also note that certain applications eg . work permit applications , work permit dependants , settlement and visits to some commonwealth countries and dependent territories may need to be referred to the uk or other authorities and will take longer to process 请注意，某些申请（如工作签证申请、亲属签证申请，定居签证申请，到某些英联邦国家或海外属地的访问签证申请等）可能需要汇报给英国政府或其他入境机构，这些申请将花费更长的时间进行办理。
