LANSING, Mich. (AP) — Michigan Attorney General Dana Nessel is expanding on why she believes it’s better for federal authorities to investigate 16 Republicans who falsely claimed they were Michigan’s presidential electors.

GOP officials in seven states submitted Electoral College certificates despite Democrat Joe Biden defeating then-President Donald Trump in their states. Nessel says that from a jurisdictional standpoint, the Justice Department can determine if there was a multistate conspiracy.

Nessel, a Democrat, cites potential difficulties interviewing people outside Michigan or using subpoena powers to bring them to the state. She also says she attended the state’s Electoral College ceremony, making her a witness.