Republican presidential hopeful Chris Christie said if elected he would model a system for tracking immigrants and foreign visitors to the United States on the package tracking system in place at FedEx. For Christie, fingerprinting, photographing, obsessively documenting, and taking iris scans from foreign visitors isn't enough. “At any moment, FedEx can tell you where that package is. It’s on the truck. It’s at the station. It’s on the airplane,” Christie said to a group of voters in New Hampshire. “Yet we let people come to this country with visas, and the minute they come in, we lose track of them."