An administration official says the Democratic governor is coming to the White House for an event unrelated to the Supreme Court. It is not clear whether Granholm will be meeting with Obama about the upcoming vacancy on the court.

The official spoke on condition of anonymity because details of Tuesday's event have not been announced.

Granholm is among more than six people Obama is considering for the seat on the court now held by Justice David Souter, who is retiring this summer.

The 50-year-old Granholm is a former federal prosecutor and Michigan attorney general.