Drobot allegedly exploited state insurance law to collect hundreds of millions of dollars from spinal surgeries.
In exchange for shaping or blocking legislation to benefit the surgery business, Drobot allegedly hired Calderon's college-age son to work as a file clerk, paying him approximately $30,000 over the course of three summers, even though he showed up for only about two or three weeks, federal authorities said.
Calderon also allegedly accepted plane trips, golf outings and expensive dinners from Drobot.
"We welcome the opportunity to disprove these allegations in a courtroom," Calderon's attorney, Mark Geragos, told the Los Angeles Times.
Calderon's brother, Thomas, also faces charges of money laundering. Thomas Calderon is a former assemblyman who most recently served as a consultant for the Central Basin Water District.