If he was demonstrating much needed leadership at the moment, he'd have taken bold action, calmed people first which might have calmed the markets. Also, Trump's tax cuts and constant threats to the Fed chair to cut rates (imagine if Fed had cut rates to 0 last year as per his demands) have left us with no levers other than ones which could potentially be catastrophic in the future. I don't think there's any shortage of non-corrupt politicians but I can't point to a single non-corrupt politician on the right (maybe except Romney).
