President Donald Trump waves as he arrives in Zurich en route to the World Economic Forum (WEF) in Davos, Switzerland, on Jan. 25, 2018. (NICHOLAS KAMM/AFP/Getty Images) The Davos ski resort during the WEF in Davos, on Jan. 26, 2018. (MIGUEL MEDINA/AFP/Getty Images) Marine One carrying President Trump comes in to land in the Alpine village of Davos, on Jan. 25, 2018. (NICHOLAS KAMM/AFP/Getty Images) President Trump arrives at the WEF in Davos, on Jan. 25, 2018. (FABRICE COFFRINI/AFP/Getty Images) President Trump and Britain’s Prime Minister Theresa May hold a bilateral meeting along with delegates on the sidelines of the WEF in Davos, on Jan. 25, 2018. (NICHOLAS KAMM/AFP/Getty Images) President Trump speaks with Israel’s Prime Minister Benjamin Netanyahu during a bilateral meeting on the sidelines of the WEF in Davos, on Jan. 25, 2018. (NICHOLAS KAMM/AFP/Getty Images) President Trump listens to SAP CEO Bill McDermott during a working dinner with European business leaders at the WEF in Davos, on Jan. 25, 2018. (NICHOLAS KAMM/AFP/Getty Images) The resort of Davos during the WEF annual meeting, on Jan. 25, 2018. (FABRICE COFFRINI/AFP/Getty Images) President Trump’s convoy arrives at the congress palace at the WEF in Davos, on Jan. 26, 2018. (MIGUEL MEDINA/AFP/Getty Images) President Trump holds up the Swiss newspaper Blick, as he arrives at the WEF in Davos, on Jan. 26, 2018. (FABRICE COFFRINI/AFP/Getty Images) President Trump shakes hands with Swiss President Alain Berset during a bilateral meeting at the WEF in Davos, on Jan. 26, 2018. (NICHOLAS KAMM/AFP/Getty Images) President Trump and Rwanda’s President Paul Kagame hold a bilateral meeting on the sidelines of the WEF in Davos, on Jan. 26, 2018. (NICHOLAS KAMM/AFP/Getty Images) President Trump and Klaus Schwab, WEF founder and executive chairman, arrive at the WEF annual meeting in Davos, on Jan. 26, 2018. (FABRICE COFFRINI/AFP/Getty Images) President Trump and Klaus Schwab, WEF founder and executive chairman, arrive to address the WEF annual meeting in Davos, on Jan. 26, 2018. (NICHOLAS KAMM/AFP/Getty Images) President Trump watches as the Landwehr Fribourg band leaves the stage during the WEF annual meeting in Davos, on Jan. 26, 2018. (FABRICE COFFRINI/AFP/Getty Images) People watch a screen broadcasting President Trump’s speech at the WEF in Davos, on Jan. 26, 2018. (MIGUEL MEDINA/AFP/Getty Images) President Trump at a discussion during the WEF in Davos, on Jan. 26, 2018. (FABRICE COFFRINI/AFP/Getty Images) A man takes a selfie during President Trump’s speech at the WEF in Davos, on Jan. 26, 2018. (MIGUEL MEDINA/AFP/Getty Images) President Trump shakes hands with Klaus Schwab, WEF founder and executive chairman, in Davos, on Jan. 26, 2018. (FABRICE COFFRINI/AFP/Getty Images) President Trump waves before departing Zurich Airport on Jan. 26, 2018. (NICHOLAS KAMM/AFP/Getty Images) President Trump waves before boarding Air Force One ahead of his departure from Zurich Airport in Switzerland, on Jan. 26, 2018. (NICHOLAS KAMM/AFP/Getty Images)