I fear for the future of the Republican party and conservatism in America as a whole with Trump. The American population in general is far too left-leaning to have a true conservative as a president at this point, but at least a centrist Republican as president would slow the rate of deterioration. Trump I feel will turn out to be a gift for the Democrats in the long-run, as Jimmy Carter was to the Republicans, maybe worse. This kind of craziness is completely unprecedented, especially considering what Trump and his many associates are under investigation for, and it will make Watergate look like nothing I have been led to believe. Constitutional crises are possible, maybe even likely.
As a Brit I am sad to see this happening to our closest ally and world leader.