Billionaire Michael Bloomberg preparing to file for Alabama presidential primary

DES MOINES, IA - AUGUST 10: Former mayor of New York City, and Everytown founder, Michael Bloomberg speaks on stage during a forum on gun safety at the Iowa Events Center on August 10, 2019 in Des Moines, Iowa. The event was hosted by Everytown for Gun Safety. (Photo by Stephen Maturen/Getty Images)

The move would be a first step toward a presidential bid, which he has not officially decided on.