Nevada Senate Majority Leader Michael Roberson speaks during Senate floor debate on Gov. Brian Sandoval's tax proposal to overhaul the state's business license fees at the Legislative Building in Carson City on Tuesday, April 21, 2015.

Cathleen Allison / AP

Nevada Senate Majority Leader Michael Roberson speaks during Senate floor debate on Gov. Brian Sandoval's tax proposal to overhaul the state's business license fees at the Legislative Building in Carson City on Tuesday, April 21, 2015.