tonight, and he is coming off a summit with some of the people who were his strongest detractors during the campaign. senior national correspondent john roberts is outside trump tower again tonight. good evening, john. >> bret, good evening to you. it was the highest profile summit yet at trump tower, which is directly behind this bus behind me, and also the highest dollars. donald trump played host to high-tech billionaires, most of whom actively campaigned against him in the election. >> well, i just want to thank everybody. >> reporter: it was a crowd that just weeks ago had been openly hostile to donald trump. amazon founder jeff bezos who during the campaign claimed trump was eroding the democratic process. apple ceo tim cook who raised millions for hillary clinton. facebook coo sheryl sandberg also backed hillary clinton, as did tesla and spacex founder, elon musk. today trump urged them all to put political differences aside and focus on growing the economy, point out tech stocks have been doing pretty well