CNNPaul Ryan: 'I'm just not ready' to back Donald TrumpCNNWashington (CNN) House Speaker Paul Ryan said Thursday he cannot yet support presumptive Republican nominee Donald Trump's presidential campaign. "I'm just not ready to do that at this point. I'm not there right now," the Wisconsin Republican told ...Ryan says he is 'not ready' to back Trump, deepening GOP divideWashington PostPolitics|From Ryan, a Reminder to Trump of the Stakes for the GOPNew York TimesRepublican Sen.