This live blog is now closed.Trump arch will alter sightlines of many Washington DC landmarks, report saysSign up for the US Breaking News emailA reminder that we are covering the latest out of Jackson Hole, Wyoming, where Kevin Warsh – the new chair of the Federal Reserve – will deliver his first speech as the head of the US central bank at the annual economic policy symposium.As my colleagues note, Warsh is under pressure to provide clarity on how the Federal Reserve should handl