The US Federal Communications Commission has voted to spend $2 billion over the next two years on improving Wi-Fi networks at schools and libraries, despite questions from Republican commissioners about the source of those funds. The FCC, in a 3-2 party-line vote Friday, approved a plan to revamp the 17-year-old E-Rate program, which pays for telecom services for schools and libraries, by phasing out funding for voice service, Web hosting and paging services, and redirecting money to Wi-Fi. FCC Chairman Tom Wheeler had proposed a $5 billion budget for Wi-Fi, but Republican commissioners and some lawmakers had questioned where the money would come from. Still, the E-Rate revamp approved Friday contemplates a $1 billion-a-year target for Wi-Fi projects “year after year,” Wheeler said. The commitment of $1 billion for Wi-Fi in 2015 means that “10 million students are going to experience new and better opportunities,” he added.