父母B2签证, 多次往返, 一年有效. 请问他们第一次来半年内回国, 还可用原来的签证(有效期内)再来吗?再来I94会给多长时间?谢谢
父母B2签证, 多次往返, 一年有效. 请问他们第一次来半年内回国, 还可用原来的签证(有效期内)再来吗?再来I94会给多长时间?谢谢
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