A former Hawaii circuit court judge and United States Attorney, he was sworn into the position of prosecutor on January 2, 2021.

[3] Alm was appointed the United States Attorney for the District of Hawaii by Bill Clinton in 1994, and led the local Weed and Seed program, coordinating law enforcement and providers of social services for a crime prevention effort in Chinatown and Kalihi–Pālama.

He has claimed that the program reduced crime in those areas by 70% over three years, and that the rate began to rise again after he left the U.S. Attorney position.

[3] He retired from his position as a judge on August 31, 2016, and was subsequently honored by the Honolulu City Council for his founding of and advocacy for HOPE.

[4] After campaigning with the endorsement of the State of Hawaii Organization of Police Officers on a platform of restoring the public's trust in the prosecutor's office,[6] and defeating former Honolulu Deputy Prosecutor Megan Kau in the election for the position, Alm was elected to a four-year term as Prosecuting Attorney of Honolulu.