On Monday, a pac chaired by Sen. Majority Leader Michael Roberson filed an initiative to amend Nevada’s constitution to prevent sanctuary cities. The initiative would prevent Nevada elected officials from enacting a law that “prohibits, limits or discourages cooperation” with the enforcement of U.S. immigration laws. Sanctuary cities—or in California’s case, a sanctuary state—refuse to tell federal immigration authorities when they have arrested or are about to release an illegal immigrant.