我是公民,母亲现在B2,I94到6月1号到期,想让她多待一段时间,请问：
1.B2延期和申请绿卡哪个批准的可能性更大些？-Both are very possible, depends on whether your mom wants to live in US permanently or just stay here temporarily.
2.如果是B2延期,延期的理由可以写帮我看孩子吗？
-No!
由于怕引起工作的怀疑,当时申请B2时没提看孩子的事。如果不行,其他理由有哪些？-You may use an excuse like it is risky for her to travel to China because the coronavirus disease is widespreaded in China and in the whole world and also, she is unable to leave US for China because the airlines are suspending between US and China due to coronavirus disease.
3.如果申请绿卡被据,那以后以B2身份来美是下是也受影响了？-Yes. But she should have no problem to get the green card. But you need to make sure whether she wants to live here permanently.
