(The Center Square) – Vice Presidential candidate J.D. Vance used a speech Wednesday at the Republican National Convention to outline a conservative agenda for America. On day three of the RNC, the U.S. Senator took center stage to call for an American-first agenda focused on the working class, which is central to former President Trump’s re-election effort. “President Trump represents America’s last best hope to restore what if lost may never be found again, a country where a working-class boy born far from the halls of power can stand on this stage, as the next Vice President of the United S…