A representative purportedly from the group "Guardians of the Free Republics, De Jure Grand Juries" contacted the Nevada Appeal on Thursday, confirming that governors in all U.S. states have been asked to resign as part of the group's "Restore America Plan."The Capitol was locked down after a letter to Gov. Jim Gibbons was intercepted Tuesday stating that governors who refused to resign would have their offices "commandeered." Metal detectors were installed to screen people and packages entering the building.Similar letters were reportedly sent to all 50 U.S. governors.An individual identifying himself as D. Merlin Campbell contacted the Nevada Appeal and …