President Trump pumps up the crowd and breaks out his signature dance moves during a rally in Pennsylvania. (Credit: Margo Martin) #fox #media #breakingnews #us #usa #new #news #breaking #foxnews #trump #donaldtrump #pennsylvania #rally #politics #political #politicalnews #government #speech #crowd #energy #viral #dance #event #america #unitedstates Subscribe to Fox News: https://bit.ly/2vBUvAS Watch more Fox News Video: http://video.foxnews.com Watch Fox News Channel Live: http://www.foxnewsgo.