It's been almost 44 years since the first woman U.S. attorney was appointed, and Philadelphia and Wilmington, Delaware, the two largest cities in their respective states, have yet to catch up.

"We're at the point now where about half the people in law school are women," said former federal prosecutor Beth Moskow-Schnoll. "If you look at the U.S. attorney's offices in Philadelphia and Delaware, they're half women. It begs the question: if it's 50-50, why haven't there been any female U.S. attorneys?"

Virginia Dill McCarty was appointed by former President Jimmy Carter to lead the U.S. Attorney's Office in the Southern District of Indiana in 1977. She was the first woman to serve a full four-year term, leaving in 1981.