i20失效后已经在美国呆了6个月，如果要回国，如何防止再次入境签证被拒？
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厚仁杨老师
同学你好，这种情况请尽快与我们联系。另外我们是因为什么原因导致I20失效，接下来需要合理规划一下签证的方案及针对于滞留的签证准备，详细的请添加我们的微信进一步咨询：wholerenguru3。