Rivera Sworn in as Middle Tenn. U.S. Attorney

Middle Tennessee’s newly appointed top federal prosecutor vowed to carry on the priorities of his predecessor -- aggressively investigating health care fraud and pursuing stiff penalties against gangs -- after being sworn in last week as U.S. Attorney. David Rivera, who had been serving as “acting” U.S. attorney since Jerry Martin stepped down, now will serve in the top job for 120 days. After that, he will have to nominated by the president and confirmed by the U.S. Congress, The Tennessean reports. Rivera has been an assistant U.S. attorney in the office since 2004. Before moving to Tennessee, he worked in federal prosecutors’ offices in Puerto Rico, Florida and New York.