Gillian Anderson and Julianna Margulies were the first choices for the role of Terri Flores ( whose last name was originally Porter ) .
Choices passed due to scheduling conflicts with both The X-Files and ER respectively before Jennifer Lopez signed on .
Gillian Anderson and Julianna Margulies were the first choices for the role of Terri Flores ( whose last name was originally Porter ) , but they passed due to scheduling conflicts with both The X-Files and ER respectively before Jennifer Lopez signed on .