Should a criminal defendant be required to prove prejudice when a federal district court erroneously strikes a potential juror for cause based on her familial association with a criminal defense attorney?

QUESTION PRESENTED Should a criminal defendant be required to prove prejudice when a federal district court erroneously strikes a potential juror for cause based on her familial association with a criminal defense attorney and her knowledge of a wrongful conviction, yet does not strike for cause venirepersons with familial associations with law enforcement officers? i