Supporters of Texas Rep. Ron Paul booed one of Mitt Romney’s adult sons off the stage Saturday at the Arizona Republican Party convention as he tried to consolidate support for his father. Josh Romney’s speech to state GOP members was cut short by jeers from Paul backers at Grand Canyon University in Phoenix, the Arizona Republic reported. The state’s convention was to elect delegates for the national convention in August, where the former Massachusetts governor is expected to wrap up the nomination to take on President Barack Obama. “We cannot afford four more years of President Obama,” said Josh Romney,...