What is the controversy over Adelita Grijalva being sworn into Congress?

Rep.-elect Adelita Grijalva (D-Ariz.) is poised to fill a vacancy in the House left by her father, the late Democratic Rep. Raúl Grijalva, but her swearing-in has been unexpectedly delayed.

Adelita Grijalva was elected last month during a special election following her father’s death.

However, House Speaker Mike Johnson (R-La.) told Grijalva she will be formally sworn in to the 119th Congress once lawmakers...