The San Francisco Chronicle reported on Harris' demurrals:
Even before the White House officially announced Holder’s resignation Thursday,Harris, who is running for re-election as California’s attorney general, released a statement saying thanks, but no thanks.Obama made headlines last year when he referred to Harris as "by far the best-looking attorney general in the country."
“I am honored to even be mentioned, but intend to continue my work for the people of California as attorney general,” said the former San Francisco district attorney. “I am focused on key public safety issues including transnational gangs, truancy and recidivism.”
Harris, a longtime friend and early political backer of President Obama, has long been on the media’s short list of people the president would look at to become the country’s top prosecutor.
Personally I think Harris would make a great Attorney General of the United States but an even better Governor. That's gonna be one tough (and crowded) Democratic primary in June 2018!