Canadian Prime Minister Justin Trudeau his wife Sophie Gregoire (L) and their children daughter Ella Grace (C) and sons Hadrien (L-blue shirt) and Xavier (R) arrive at Air Force Station Palam in New Delhi, India, February 17, 2018.

Canadian Prime Minister Justin Trudeau, his wife Sophie Gregoire Trudeau, their daughter Ella Grace and sons Hadrien and Xavier pose in front of the Taj Mahal in Agra, India, February 18, 2018. Reuters/Adnan Abidi

Canadian Prime Minister Justin Trudeau, his wife Sophie Gregoire Trudeau, their daughter Ella Grace and sons Hadrien and Xavier pay their respect in front of a portrait of Mahatma Gandhi during their visit to Gandhi Ashram in Ahmedabad, India, February 19, 2018.

Canadian Prime Minister Justin Trudeau his wife Sophie Gregoire Trudeau and their children daughter Ella Grace (R) and son Hadrien walk towards their car upon their arrival at Air Force Station Palam in New Delhi, India, February 17, 2018.

Canadian Prime Minister Justin Trudeau's daughter Ella Grace adjusts her cap during her visit to the Taj Mahal in Agra, India February 18, 2018.

Canadian Prime Minister Justin Trudeau with his wife Sophie Gregoire, daughter Ella Grace and sons Hadrien and Xavier walk during their visit to the Taj Mahal in Agra, India February 18, 2018.

Canadian Prime Minister Justin Trudeau's message is seen in the visitor book after their visit to the Taj Mahal in Agra, India February 18, 2018. REUTERS/Adnan Abidi - RC1DF624CE90

Sophie Gregoire Trudeau, wife of Canadian Prime Minister Justin Trudeau, reacts as she spins cotton on a wheel watched by her husband Trudeau, their daughter Ella Grace and sons Hadrien and Xavier during their visit to Gandhi Ashram in Ahmedabad, India, February 19, 2018.

Canadian Prime Minister Justin Trudeau's son Hadrien (L) and his wife Sophie Gregoire Trudeau disembark from an airplane upon their arrival at Air Force Station Palam in New Delhi, India, February 17, 2018.

Canadian Prime Minister Justin Trudeau, his wife Sophie Gregoire Trudeau, their daughter Ella Grace and sons Hadrien and Xavier pose in front of the Taj Mahal in Agra, India, February 18, 2018.

Canadian Prime Minister Justin Trudeau and his wife Sophie Gregoire (L) help their son Hadrien to sign a visitor book as their daughter Ella-Grace and son Xavier look on during their visit to the Taj Mahal in Agra, India February 18, 2018.

Canadian Prime Minister Justin Trudeau and his son Xavier spin cotton on a wheel watched by Trudeau's wife Sophie Gregoire Trudeau, their daughter Ella Grace and son Hadrien during their visit to Gandhi Ashram in Ahmedabad, India, February 19, 2018.

Canadian Prime Minister Justin Trudeau, his wife Sophie Gregoire Trudeau, their daughter Ella Grace and sons Hadrien and Xavier visit the Taj Mahal in Agra, India, February 18, 2018.

Canadian Prime Minister Justin Trudeau plays with his son Hadrien as his wife Sophie Gregoire (3-L), daughter Ella Grace (L) and son Xavier (C) look on during their visit to the Taj Mahal in Agra, India February 18, 2018.

Canadian Prime Minister Justin Trudeau writes a message in the visitor's book, watched by his wife Sophie Gregoire Trudeau, their daughter Ella Grace and sons Hadrien and Xavier, during their visit to Gandhi Ashram in Ahmedabad, India, February 19, 2018.

Canadian Prime Minister Justin Trudeau, his wife Sophie Gregoire Trudeau, their daughter Ella Grace and sons Hadrien and Xavier visit the Taj Mahal in Agra, India, February 18, 2018. REUTERS/Adnan Abidi - RC1FFD0A7110