 The U.S. Secret Service is investigating how a gunman armed with an AR-style rifle was able to get close enough to shoot and injure the former president at his rally in Pennsylvania. Lawyers for Hunter Biden have withdrawn their request for a new gun trial. Hunter Biden was found guilty last month on three felony charges stemming from his purchase of a handgun in 2018 when he was allegedly struggling with drug addiction and faces up to 25 years imprisonment and hefty fines when sentenced.