NEW : A pro-Santorum PAC buys $ 310,000 in ad time in Illinois . Puerto Rico says that English should be required for Puerto Rico to become a state . PAC 's campaign responds with a statement saying he would not require that . The Vocero newspaper reported that Hector Perez said he is no longer committed to Santorum . Illinois , next on the campaign trail , has a statehood referendum in Sunday .
NEW : A pro-Santorum PAC buys $ 310,000 in ad time in Illinois . Puerto Rico says that English should be required for Puerto Rico to become a state . PAC 's campaign responds with a statement saying he would not require that . Illinois , next on the campaign trail , has a statehood referendum in Sunday .