Ron Howard has one question on his mind, and it has nothing to with his latest film, “Solo: A Star Wars Story.” “Honest question to #MAGA minders,” the 64-year-old tweeted Thursday. “When was America at its greatest? Can you tell me an era that reflects the ‘Again’ that you hope to return to?” The Oscar-winning filmmaker and former “Happy Days” actor quickly started a conversation with users who had different opinions of President Trump’s famous slogan.