FILE - In this Oct. 4, 2017 file photo, the exterior of the Veterans Affairs Department hospital is shown in east Denver. Investigators with the VA Office of Inspector General found that the hospital violated policy by keeping improper wait lists to track veterans' mental health care, confirming a whistleblower’s claims. (AP Photo/David Zalubowski, File)

RM2MPWXHT–FILE - In this Oct. 4, 2017 file photo, the exterior of the Veterans Affairs Department hospital is shown in east Denver. Investigators with the VA Office of Inspector General found that the hospital violated policy by keeping improper wait lists to track veterans' mental health care, confirming a whistleblower’s claims. (AP Photo/David Zalubowski, File)

FILE - This combination of the file photos show Chinese President Xi Jinping, left, on Oct 25, 2017 in Beijing and South Korean President Moon Jae-in on Sept. 21, 2017 at U.N. headquarters. South Korean senior presidential official told a televised briefing Tuesday, Oct. 31, 2017 that President Moon and Xi will talk on the sidelines of an annual regional forum in Vietnam next week. (AP Photo/Ng Han Guan, Richard Drew, File)

RM2MR3MBM–FILE - This combination of the file photos show Chinese President Xi Jinping, left, on Oct 25, 2017 in Beijing and South Korean President Moon Jae-in on Sept. 21, 2017 at U.N. headquarters. South Korean senior presidential official told a televised briefing Tuesday, Oct. 31, 2017 that President Moon and Xi will talk on the sidelines of an annual regional forum in Vietnam next week. (AP Photo/Ng Han Guan, Richard Drew, File)

FILE - In this March 6, 2017, file photo, Dallas Seavey, four-time Iditarod winner and reigning champion, is aiming for his fifth Iditarod crown in six years. Seavey took off wearing bib #18 at the start of the 45th Iditarod Trail Sled Dog Race in Fairbanks, Alaska. Four-time Iditarod champion Seavey denies he administered banned drugs to his dogs in this year's race, and has withdrawn from the 2018 race in protest. The Iditarod Trail Committee on Monday, Oct. 23, 2017, identified Seavey as the musher who had four dogs test positive for a banned opioid pain reliever after finishing the race la

RM2MR5X6B–FILE - In this March 6, 2017, file photo, Dallas Seavey, four-time Iditarod winner and reigning champion, is aiming for his fifth Iditarod crown in six years. Seavey took off wearing bib #18 at the start of the 45th Iditarod Trail Sled Dog Race in Fairbanks, Alaska. Four-time Iditarod champion Seavey denies he administered banned drugs to his dogs in this year's race, and has withdrawn from the 2018 race in protest. The Iditarod Trail Committee on Monday, Oct. 23, 2017, identified Seavey as the musher who had four dogs test positive for a banned opioid pain reliever after finishing the race la

FILE - In this Oct. 7, 2012, file photo Dan Rooney watches warm ups before an NFL football game between the Pittsburgh Steelers and Philadelphia Eagles in Pittsburgh. The Steelers announced Mr. Rooney died Thursday, Apr. 13, 2017. He was 84. (AP Photo/Gene J. Puskar, File)

RM2MW3RFT–FILE - In this Oct. 7, 2012, file photo Dan Rooney watches warm ups before an NFL football game between the Pittsburgh Steelers and Philadelphia Eagles in Pittsburgh. The Steelers announced Mr. Rooney died Thursday, Apr. 13, 2017. He was 84. (AP Photo/Gene J. Puskar, File)

RM2MW3RFM–FILE - In this Oct. 7, 2012, file photo Dan Rooney watches warm ups before an NFL football game between the Pittsburgh Steelers and Philadelphia Eagles in Pittsburgh. The Steelers announced Mr. Rooney died Thursday, Apr. 13, 2017. He was 84. (AP Photo/Gene J. Puskar, File)

FILE- In this undated file photo provided by Guernsey's, John F. Kennedy is at the wheel of his speedboat, Restofus. Hot memorabilia with a Cold War theme, including property of the late President John F. Kennedy and CIA pilot Francis Gary Powers, is being featured at an auction in New York City on Saturday, Oct. 7, 2017. (Guernsey's via AP)

RM2NY6KGC–FILE- In this undated file photo provided by Guernsey's, John F. Kennedy is at the wheel of his speedboat, Restofus. Hot memorabilia with a Cold War theme, including property of the late President John F. Kennedy and CIA pilot Francis Gary Powers, is being featured at an auction in New York City on Saturday, Oct. 7, 2017. (Guernsey's via AP)

FILE - In this file photo from Oct. 9, 2017, Iceland's fans celebrate their team's victory against Kosovo, following the World Cup Group I qualifying soccer match between Iceland and Kosovo in Reykjavik, Iceland. (AP Photo/Brynjar Gunnarsson, File)

RM2MN5Y99–FILE - In this file photo from Oct. 9, 2017, Iceland's fans celebrate their team's victory against Kosovo, following the World Cup Group I qualifying soccer match between Iceland and Kosovo in Reykjavik, Iceland. (AP Photo/Brynjar Gunnarsson, File)

FILE - In this Oct. 8, 2016 file photo, Drake performs onstage in Toronto. Drake leads the nominations for the 2017 iHeartRadio Music Awards with 12, including male artist of the year, announced Wednesday, Jan. 4, 2017. (Photo by Arthur Mola/Invision/AP, File)

RM2MWNGKT–FILE - In this Oct. 8, 2016 file photo, Drake performs onstage in Toronto. Drake leads the nominations for the 2017 iHeartRadio Music Awards with 12, including male artist of the year, announced Wednesday, Jan. 4, 2017. (Photo by Arthur Mola/Invision/AP, File)

FILE - In this Oct. 30, 2017, file photo, Paul Manafort leaves Federal District Court in Washington. Manafort, President Donald Trump's former campaign chairman, and Manafort's business associate Rick Gates pleaded not guilty to felony charges of conspiracy against the United States and other counts. (AP Photo/Alex Brandon, File)

RM2MK4GX4–FILE - In this Oct. 30, 2017, file photo, Paul Manafort leaves Federal District Court in Washington. Manafort, President Donald Trump's former campaign chairman, and Manafort's business associate Rick Gates pleaded not guilty to felony charges of conspiracy against the United States and other counts. (AP Photo/Alex Brandon, File)

FILE - In this Oct. 22, 2015 file photo, Brazilian Football Confederation President Marco Polo del Nero listens to questions during a press conference in Rio de Janeiro, Brazil. FIFA announced Friday, Dec. 15, 2017, the provisional suspension of Polo del Nero, while he is under investigation for corruption. (AP Photo/Felipe Dana, File)

RM2MPFWGD–FILE - In this Oct. 22, 2015 file photo, Brazilian Football Confederation President Marco Polo del Nero listens to questions during a press conference in Rio de Janeiro, Brazil. FIFA announced Friday, Dec. 15, 2017, the provisional suspension of Polo del Nero, while he is under investigation for corruption. (AP Photo/Felipe Dana, File)

FILE - In this March 30, 2017, file photo, NCAA President Mark Emmert answers a question at a news conference in Glendale, Ariz. Emmert said Monday, Oct. 30, major changes are needed in college basketball before next season to show the public that the NCAA is capable of governing the sport in the wake of a bribery scandal. (AP Photo/Matt York, File)

RM2MR3WD5–FILE - In this March 30, 2017, file photo, NCAA President Mark Emmert answers a question at a news conference in Glendale, Ariz. Emmert said Monday, Oct. 30, major changes are needed in college basketball before next season to show the public that the NCAA is capable of governing the sport in the wake of a bribery scandal. (AP Photo/Matt York, File)

FILE - In this file photo taken Wednesday, Sept. 12, 2012, a man looks at documents at the U.S. Consulate in Benghazi, Libya, the day after an attack that killed four Americans, including Ambassador Chris Stevens. The trial of Khattala, the Libyan militant accused of being the mastermind of the 2012 Benghazi attacks is scheduled to begin on Oct. 2, 2017. (AP Photo/Ibrahim Alaguri, File)

RM2MRCFX3–FILE - In this file photo taken Wednesday, Sept. 12, 2012, a man looks at documents at the U.S. Consulate in Benghazi, Libya, the day after an attack that killed four Americans, including Ambassador Chris Stevens. The trial of Khattala, the Libyan militant accused of being the mastermind of the 2012 Benghazi attacks is scheduled to begin on Oct. 2, 2017. (AP Photo/Ibrahim Alaguri, File)

FILE - In this Oct. 20, 2014, file photo, co-host Bob Costas attends the 24th Annual Broadcasting and Cable Hall of Fame Awards at the Waldorf-Astoria in New York. Costas is stepping down as NBC’s prime-time host for the Olympics, to be replaced by Mike Tirico next winter in South Korea, the network said Thursday, Feb. 9, 2017. (Photo by Evan Agostini/Invision/AP, File)

RM2MWFHY2–FILE - In this Oct. 20, 2014, file photo, co-host Bob Costas attends the 24th Annual Broadcasting and Cable Hall of Fame Awards at the Waldorf-Astoria in New York. Costas is stepping down as NBC’s prime-time host for the Olympics, to be replaced by Mike Tirico next winter in South Korea, the network said Thursday, Feb. 9, 2017. (Photo by Evan Agostini/Invision/AP, File)