WASHINGTON: Democrats vowed on Wednesday to use their resounding midterm victory to rein in President Donald Trump, setting up two years of possible deadlock in Washington, as Trump spent his first post-election appearance showing off his under-construction White House ballroom. A wave of anger over Trump’s policies, particularly the US-Iran war’s role in pushing the cost of living higher, helped Democrats take the Senate, where they flipped seats in deeply Republican states for a majority of