Can sister with B2 visa enter US while I-130 is pending for Mother,Father and sister?

AllyZZZ

New Member
Im a US citizen, applied I-130 and its pending for my sister.
She, her husband and two kids have B2 visa for the rest of the year.
They want to come visit me in US from Ukraine (Crimea, I guess its Russia now).
Is there chance that they would not be allowed to enter US? Or everything is fine?

Thank you very much!
 
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