Photo gallery: President Trump visits Arlington for Memorial Day ARLINGTON, VA - MAY 29: President Donald Trump participates in a wreath-laying ceremony at the Tomb of the Unknown Soldier at Arlington National Cemetery on Memorial Day, May 29, 2017 in Arlington, Virginia. (Photo by Olivier Douliery - Pool/Getty Images)Photo by: Pool Photo gallery: President Trump visits Arlington for Memorial Day ARLINGTON, VA - MAY 29: U.S. President Donald Trump (C) and Vice President Mike Pence (2nd R) walk through Section 60 at Arlington National Cemetery on Memorial Day May 29, 2017 in Arlington, Virginia. Trump and Pence layed flowers at the grave of Marine Corps Second Lt. Robert Kelly, the son of Homeland Security Secretary John Kelly. May 29, 2017 in Arlington, Virginia. (Photo by Chip Somodevilla/Getty Images)Photo by: Chip Somodevilla Photo gallery: President Trump visits Arlington for Memorial Day ARLINGTON, VA - MAY 29: President Donald Trump stands with Secretary of Homeland Security John Kelly after laying flowers on the grave of Kelly's son, First Lieutenant Robert Kelly, at Arlington National Cemetery on May 29, 2017 in Arlington, Virginia. Lt. Kelly was killed in 2010 while leading a patrol in Afghanistan. (Photo by Aaron P. Bernstein/Getty Images)Photo by: Aaron P. Bernstein Photo gallery: President Trump visits Arlington for Memorial Day ARLINGTON, VA - MAY 29: President Donald Trump participates in a wreath-laying ceremony at the Tomb of the Unknown Soldier at Arlington National Cemetery on Memorial Day, May 29, 2017 in Arlington, Virginia. (Photo by Olivier Douliery - Pool/Getty Images)Photo by: Pool Photo gallery: President Trump visits Arlington for Memorial Day ARLINGTON, VA - MAY 29: U.S. President Donald Trump (C) waves before leaving Section 60 at Arlington National Cemetery on Memorial Day May 29, 2017 in Arlington, Virginia. Trump visited with families and layed flowers at the grave of Marine Corps Second Lt. Robert Kelly, the son of Homeland Security Secretary John Kelly. (Photo by Chip Somodevilla/Getty Images)Photo by: Chip Somodevilla Photo gallery: President Trump visits Arlington for Memorial Day ARLINGTON, VA - MAY 29: President Donald Trump speaks at a wreath-laying ceremony at the Tomb of the Unknown Soldier at Arlington National Cemetery on Memorial Day, May 29, 2017 in Arlington, Virginia. (Photo by Olivier Douliery - Pool/Getty Images)Photo by: Pool Photo gallery: President Trump visits Arlington for Memorial Day ARLINGTON, VA - MAY 29: President Donald Trump and Vice President Mike Pence walk through Section 60 of Arlington National Cemetery on May 29, 2017 in Arlington, Virginia. Trump laid flowers at the grave of Marine Lieutenant Robert Kelly, son of Homeland Security John Kelly. (Photo by Aaron P. Bernstein/Getty Images)Photo by: Aaron P. Bernstein Photo gallery: President Trump visits Arlington for Memorial Day ARLINGTON, VA - MAY 29: President Donald Trump speaks at a wreath-laying ceremony at the Tomb of the Unknown Soldier at Arlington National Cemetery on Memorial Day, May 29, 2017 in Arlington, Virginia. (Photo by Olivier Douliery - Pool/Getty Images)Photo by: Pool Photo gallery: President Trump visits Arlington for Memorial Day ARLINGTON, VA - MAY 29: President Donald Trump arrives to greet mourners at Section 60 of Arlington National Cemetery on May 29, 2017 in Arlington, Virginia. President Trump spent Memorial Day addressing veterans at the cemetery. (Photo by Aaron P. Bernstein/Getty Images)Photo by: Aaron P. Bernstein Photo gallery: President Trump visits Arlington for Memorial Day ARLINGTON, VA - MAY 29: As Vice President Mike Pence and Secretary of Homeland Security John Kelly shake hands, President Donald Trump lays flowers on the grave of Kelly's son Robert at Arlington National Cemetery on May 29, 2017 in Arlington, Virginia. Marine Lieutenant Robert Kelly was killed in 2010 while leading a patrol in Afghanistan. (Photo by Aaron P. Bernstein/Getty Images)Photo by: Aaron P. Bernstein Photo gallery: President Trump visits Arlington for Memorial Day ARLINGTON, VA - MAY 29: U.S. President Donald Trump (C) points while walking through Section 60 at Arlington National Cemetery on Memorial Day May 29, 2017 in Arlington, Virginia. Trump visited with families and layed flowers at the grave of Marine Corps Second Lt. Robert Kelly, the son of Homeland Security Secretary John Kelly. (Photo by Chip Somodevilla/Getty Images)Photo by: Chip Somodevilla Photo gallery: President Trump visits Arlington for Memorial Day ARLINGTON, VA - MAY 29: U.S. President Donald Trump (C) shakes hands with Jim Malachowski of Westminster, Maryland, while walking through Section 60 at Arlington National Cemetery on Memorial Day May 29, 2017 in Arlington, Virginia. Malachowski's son, Staff Sgt. James Malachowski was killed in March 2011 while deployed in Marja, Afghanistan, and is buried at Arlington. Trump also layed flowers at the grave of Marine Corps Second Lt. Robert Kelly, the son of Homeland Security Secretary John Kelly. May 29, 2017 in Arlington, Virginia. (Photo by Chip Somodevilla/Getty Images)Photo by: Chip Somodevilla Photo gallery: President Trump visits Arlington for Memorial Day ARLINGTON, VA - MAY 29: President Donald Trump participates in a wreath-laying ceremony at the Tomb of the Unknown Soldier at Arlington National Cemetery on Memorial Day, May 29, 2017 in Arlington, Virginia. (Photo by Olivier Douliery - Pool/Getty Images)Photo by: Pool Photo gallery: President Trump visits Arlington for Memorial Day ARLINGTON, VA - MAY 29: President Donald Trump participates in a wreath-laying ceremony at the Tomb of the Unknown Soldier at Arlington National Cemetery on Memorial Day, May 29, 2017 in Arlington, Virginia. (Photo by Olivier Douliery - Pool/Getty Images)Photo by: Pool Photo gallery: President Trump visits Arlington for Memorial Day ARLINGTON, VA - MAY 29: President Donald Trump speaks with Secretary of Homeland Security John Kelly and Vice President Mike Pence before laying flowers on the grave of Kelly's son, First Lieutenant Robert Kelly, at Arlington National Cemetery on May 29, 2017 in Arlington, Virginia. Lt. Kelly was killed in 2010 while leading a patrol in Afghanistan. (Photo by Aaron P. Bernstein/Getty Images)Photo by: Aaron P. Bernstein Photo gallery: President Trump visits Arlington for Memorial Day ARLINGTON, VA - MAY 29: President Donald Trump participates in a wreath-laying ceremony at the Tomb of the Unknown Soldier at Arlington National Cemetery on Memorial Day, May 29, 2017 in Arlington, Virginia. (Photo by Olivier Douliery - Pool/Getty Images)Photo by: Pool Photo gallery: President Trump visits Arlington for Memorial Day ARLINGTON, VA - MAY 29: President Donald Trump stands with Secretary of Homeland Security John Kelly and Vice President Mike Pence after laying flowers on the grave of Kelly's son, First Lieutenant Robert Kelly, at Arlington National Cemetery on May 29, 2017 in Arlington, Virginia. Lt. Kelly was killed in 2010 while leading a patrol in Afghanistan. (Photo by Aaron P. Bernstein/Getty Images)Photo by: Aaron P. Bernstein Photo gallery: President Trump visits Arlington for Memorial Day ARLINGTON, VA - MAY 29: U.S. President Donald Trump (C) waves to people while walking through Section 60 at Arlington National Cemetery on Memorial Day May 29, 2017 in Arlington, Virginia. Trump visited with families and layed flowers at the grave of Marine Corps Second Lt. Robert Kelly, the son of Homeland Security Secretary John Kelly. (Photo by Chip Somodevilla/Getty Images)Photo by: Chip Somodevilla Photo gallery: President Trump visits Arlington for Memorial Day ARLINGTON, VA - MAY 29: U.S. President Donald Trump (C) lays flowers at the grave of Marine Corps Second Lt. Robert Kelly, the son of Homeland Security Secretary John Kelly in Section 60 at Arlington National Cemetery on Memorial Day May 29, 2017 in Arlington, Virginia. Trump and Vice President Mike Pence both layed flowers at the grave and visite with families. (Photo by Chip Somodevilla/Getty Images)Photo by: Chip Somodevilla Photo gallery: President Trump visits Arlington for Memorial Day ARLINGTON, VA - MAY 29: U.S. President Donald Trump (C) holds up a yellow rose while walking through Section 60 at Arlington National Cemetery on Memorial Day May 29, 2017 in Arlington, Virginia. Trump visited with families and layed flowers at the grave of Marine Corps Second Lt. Robert Kelly, the son of Homeland Security Secretary John Kelly. (Photo by Chip Somodevilla/Getty Images)Photo by: Chip Somodevilla Photo gallery: President Trump visits Arlington for Memorial Day ARLINGTON, VA - MAY 29: President Donald Trump sings the national anthem during a wreath-laying ceremony at the Tomb of the Unknown Soldier at Arlington National Cemetery on Memorial Day, May 29, 2017 in Arlington, Virginia. (Photo by Olivier Douliery - Pool/Getty Images)Photo by: Pool