Federal agents dismantled a network of devices in the New York area that was used to threaten senior US government officials and bore signs of foreign involvement, according to the US Secret Service.Agents discovered more than 300 SIM card servers and 100,000 SIM cards at several locations within a 35-mile radius of New York City, according to a statement on Tuesday. The Secret Service moved quickly given that any attack could have severely disrupted New York at a time when world leaders are gat...