I might happen
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Like my fellow attorney, I assume you mean I-130 and I-730. The visa will not be cancelled during the processing time. But you need to be careful in any traveling he might do and what he will say at the point of entry.
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No, his visa will not be cancelled during the processing time, unless he violates the terms of his visa. Like my colleague said, if traveling be careful what he says at point of entry. The great thing is that since he entered legally he could adjust here.
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