Malik Faisal Akram was heard demanding the release of a Pakistani neuroscientist who was convicted of trying to kill U.S. Army officers in Afghanistan.
Experts in homegrown extremism have warned for years about efforts by far-right militants and white-supremacist groups to radicalize and recruit people with military and law enforcement training.
Retired Lt. Col. Larry Rendall Brock Jr. was arrested after being photographed on the Senate floor during the deadly riot wearing a helmet and heavy vest, and carrying plastic zip-tie handcuffs.
Federal agents have seized more than 20 vehicles and the money from 10 bank accounts belonging to married U.S. Army veterans in Texas, saying the pair used personal information stolen from soldiers to defraud the military out of as much as $11 million.