 They'll cancel another $1.2 billion in student debt for 35,000 additional people. The probe continues into the 20-year-old gunman who tried to kill former President Trump at a rally last Saturday. CBS's Nicole Skanga. There's a premeditation here, but as for the motivation, investigators are still doing a full forensic scrub. His family, including his parents, have cooperated, and the FBI has interviewed them along with hundreds of others.