Miami Man Arrested for Threatening Obama Joaquin Amador Serrapio pleads not guilty after house raid By Neal Colgrass, Newser Staff Posted Feb 27, 2012 7:12 PM CST 78 comments Comments President Barack Obama points to the place where he fired a marshmallow gun while speaking before the National Governors Association, Monday, Feb. 27, 2012, in the White House. (AP Photo/Susan Walsh) (Newser) – Federal agents arrested a 20-year-old Florida man for allegedly threatening President Obama during a presidential fundraising trip to Miami last week, NBC Miami reports. Agents raided the home of Miami resident Joaquin Amador Serrapio on Thursday and took him into custody, where he pleaded not guilty to a federal magistrate. Serrapio's cash bond was set at $20,000 with an additional $50,000 surety bond signed by his parents. Authorities have not revealed the details of Serrapio's alleged threat.