Additionally he funded, financed and was the visionary and co-founder of the Simon Wiesenthal Center, and from 2006 until shortly before his death he was the United States Ambassador to the Netherlands.

[4] Arnall was the billionaire owner of ACC Capital Holdings, the parent company of Ameriquest, which was once one of the United States's largest sub-prime mortgage lenders.

[10] Mrs. Arnall also served as a co-chair for the 2004 Republican Convention and hosted a $1 million Bush-Cheney fundraiser at the couple's 10-acre (40,000 m2) home in Holmby Hills.

[11][12] Writes USA Today, "Inaugural fundraisers Dawn and Roland Arnall found a creative way to pump more than the $250,000 limit into the event.

Arnall announced his resignation as ambassador on February 21, 2008, effective on March 7, citing the ill health of his son.

On March 17, 2008, Arnall died of cancer according to FOX Business at the UCLA Medical Center in Los Angeles, twelve days shy of his 69th birthday.

[15][16][17] SHMAIS.com (Lubavitch News Website) reported that Chabad of California was to be the beneficiary of an $18 million donation from the estate of Roland Arnall.