AP
U.S. President Donald Trump alights from Air Force One at Zurich International Airport for the Davos World Economic Forum, Thursday, Jan. 25, 2018, in Zurich, Switzerland. Trump is attending the annual gathering for free-trade-loving political and business elites at the Davos economic summit in the Swiss Alps.(AP Photo/Evan Vucci)
- Evan Vucci
In this photo released by CAMPAX campaign organization, a banner with the inscription "Trump not welcome!" is hanging in a rock face of the Ellhorn mountain near Sargans, Switzerland, on Thursday, Jan. 25, 2018. The campaign organization Campax is protesting against US President Trump's visit to Switzerland. (Antonio Pante/Campax/Keystone via AP)
- Antonio Pante
Christine Lagarde, Managing Director of the International Monetary Fund IMF, left, and Steven Mnuchin, Secretary of the Treasury of the United States, attend a panel session during the 48th Annual Meeting of the World Economic Forum, WEF, in Davos, Switzerland, Thursday, Jan. 25, 2018. (Laurent Gillieron/Keystone via AP)
- Laurent Gillieron
Christine Lagarde, Managing Director of the International Monetary Fund IMF, left, and Steven Mnuchin, Secretary of the Treasury of the United States, attend a panel session during the 48th Annual Meeting of the World Economic Forum, WEF, in Davos, Switzerland, Thursday, Jan. 25, 2018. (Laurent Gillieron/Keystone via AP)
- Laurent Gillieron
U.S. President Donald Trump steps off Air Force One on arrival at Zurich International Airport for the Davos World Economic Forum, Thursday, Jan. 25, 2018, in Zurich, Switzerland. Trump is ready to play salesman at the Davos economic summit in the Swiss Alps. (AP Photo/Evan Vucci)
- Evan Vucci
Canadian Finance Minister Bill Morneau speaks during a panel session at the 48th Annual Meeting of the World Economic Forum, WEF, in Davos, Switzerland, Thursday, Jan. 25, 2018. The meeting brings together entrepreneurs, scientists, corporate and political leaders in Davos, from January 23 to 26. (Laurent Gillieron/Keystone via AP)
- Laurent Gillieron
Swiss Federal President Alain Berset, right, and Zimbabwe's President Emmerson Mnangagwa, left, shake hands during a bilateral meeting at the 48th Annual Meeting of the World Economic Forum, WEF, in Davos, Switzerland, Thursday, Jan. 25, 2018. The meeting brings together entrepreneurs, scientists, corporate and political leaders in Davos, January 23 to 26. (Peter Klaunzer/Keystone via AP)
- Peter Klaunzer
Swiss Federal President Alain Berset, right, and Britain's Prime Minister Theresa May, left, shake hands before a bilateral meeting at the 48th Annual Meeting of the World Economic Forum, WEF, in Davos, Switzerland, Wednesday, Jan. 24, 2018. The meeting brings together entrepreneurs, scientists, corporate and political leaders in Davos, January 23 to 26. (Peter Klaunzer/Keystone via AP)
- Peter Klaunzer