President Barack Obama holds a New England Patriots football jersey presented to him by New England Patriots owner Robert Kraft, during a ceremony on the South Lawn of the White House in Washington, Thursday, April 23, 2015, where the honored the Super Bowl Champion New England Patriots for their Super Bowl XLIX victory. (AP Photo/Pablo Martinez Monsivais)

President Barack Obama, flanked by New England Patriots head coach Bill Belichick, left, and team owner Robert Kraft, holds a New England Patriots jersey while posing photo during a ceremony on the South Lawn of the White House in Washington, Thursday, April 23, 2015, where the president honored the Super Bowl Champion New England Patriots for their Super Bowl XLIX victory. (AP Photo/Susan Walsh)

President Barack Obama holds a New England Patriots team jersey, flanked by New England Patriots coach Bill Belichick, left, and team owner Robert Kraft, right, as he welcomed the Super Bowl Champion New England Patriots, Thursday, April 23, 2015, on the South Lawn of the White House in Washington, to honor the team and their Super Bowl XLIX victory. (AP Photo/Pablo Martinez Monsivais)

President Barack Obama holds a signed New England Patriots football helmet, and a Patriots football jersey as he stands with New England Patriots team owner Robert Kraft, right, and head coach Bill Belichick, on the South Lawn of the White House in Washington, Thursday, April 23, 2015, during a ceremony to honor the team and their Super Bowl XLIX victory. (AP Photo/Susan Walsh)

Devin McCourty visits Adam at Boston Children's Hospital. (Photo by Darren McCollester/Getty Images for Boston Children's Hospital)

Devin McCourty lip syncs with Isabella at Boston Children's Hospital. (Photo by Darren McCollester/Getty Images for Boston Children's Hospital)

New England Patriots coach Bill Belichick, left, gives 'thumbs-down' to a joke President Barack Obama made during a ceremony welcoming the Super Bowl Champion New England Patriots, Thursday, April 23, 2015, on the South Lawn of the White House in Washington, to honor the team and their Super Bowl XLIX victory. On the right is Robert Kraft Chairman and CEO of the New England Partriots. (AP Photo/Pablo Martinez Monsivais)

President Barack Obama shakes hands New England wide receiver Julian Edelman during a ceremony on the South Lawn of the White House in Washington, Thursday, April 23, 2015, where the president honored the Super Bowl Champion New England Patriots for their Super Bowl XLIX victory. (AP Photo/Pablo Martinez Monsivais)

President Barack Obama walks with New England Patriots owner Robert Kraft, second from left, and head coach Bill Belichick as they arrive for a ceremony to welcome the Super Bowl Champion New England Patriots, Thursday, April 23, 2015, on the South Lawn of the White House in Washington, to honor the team and their Super Bowl XLIX victory. (AP Photo/Susan Walsh)

President Barack Obama turns around to look at New England Patriots tight end Rob Gronkowski, center, during a ceremony on the South Lawn of the White House in Washington, Thursday, April 23, 2015, to honor the football team and their Super Bowl XLIX victory. (AP Photo/Pablo Martinez Monsivais)

Members of the New England Patriots laugh as head coach Bill Belichick gives President Barack Obama a thumbs down after Obama made a joke during a ceremony to welcome the Super Bowl Champion New England Patriots, Thursday, April 23, 2015, on the South Lawn of the White House, Thursday, April 23, 2015, to honor the team and their Super Bowl XLIX victory. (AP Photo/Susan Walsh)

President Barack Obama holds a signed New England Patriots football helmet presented to him by New England Patriots team owner Robert Kraft, during a ceremony on the South Lawn of the White House in Washington, Thursday, April 23, 2015, to honor the Super Bowl Champion New England Patriots for their Super Bowl XLIX victory. (AP Photo/Susan Walsh)

President Barack Obama holds a New England Patriots team football jersey, flanked by New England Patriots coach Bill Belichick, left, and team owner Robert Kraft, during a ceremony on the South Lawn of the White House in Washington, Thursday, April 23, 2015, to honor the Super Bowl Champion New England Patriots for their Super Bowl XLIX victory. (AP Photo/Pablo Martinez Monsivais)

President Barack Obama holds a New England Patriots team football jersey, flanked by New England Patriots coach Bill Belichick, left, and team owner Robert Kraft, right, during a ceremony on the South Lawn of the White House in Washington, Thursday, April 23, 2015, to honor the Super Bowl Champion New England Patriots for their Super Bowl XLIX victory. (AP Photo/Pablo Martinez Monsivais)

New England Patriots head football coach Bill Belichick, center, answers a question outside the White House in Washington, Thursday, April 23, 2015, following a ceremony on the South Lawn with President Barack Obama who welcomed the Super Bowl Champion New England Patriots for their Super Bowl XLIX victory. Fro left are, team owner Robert Kraft, wide receiver Julian Edelman, Belichick and and defensive end Chandler Jones. (AP Photo/Susan Walsh)

President Barack Obama, holding a signed New England Patriots helmet and football jersey, shares a laugh with New England Patriots team owner Robert Kraft, right, during a ceremony on the South Lawn of the White House in Washington, Thursday, April 23, 2015, to honor the Super Bowl Champion New England Patriots for their Super Bowl XLIX victory. (AP Photo/Susan Walsh)

President Barack Obama holds up a football with his name on it that was given to him by New England Patriots owner Robert Kraft, left, during a ceremony on the South Lawn of the White House in Washington, Thursday, April 23, 2015, to honor the team and their Super Bowl XLIX victory. (AP Photo/Pablo Martinez Monsivais)

President Barack Obama sets down a football he was given during a ceremony on the South Lawn of the White House in Washington, Thursday, April 23, 2015, where he honored the Super Bowl Champion New England Patriots for their Super Bowl XLIX victory. (AP Photo/Susan Walsh)

President Barack Obama holds up a football with his name on it that was given to him by New England Patriots football team Robert Kraft during a ceremony on the South Lawn of the White House in Washington, Thursday, April 23, 2015, to honor the Super Bowl Champion New England Patriots for their Super Bowl XLIX victory. (AP Photo/Pablo Martinez Monsivais)

Defensive back Darrelle Revis , who signed as a free agent with the New York Jets, participates in a ceremony on the South Lawn of the White House in Washington, Thursday, April 23, 2015, where President Barack Obama welcomed the Super Bowl Champion New England Patriots for their Super Bowl XLIX victory. (AP Photo/Pablo Martinez Monsivais)

Devin McCourty lip syncs with Gwendolyn and Tyler at Boston Children's Hospital. (Photo by Darren McCollester/Getty Images for Boston Children's Hospital)

Devin McCourty lip syncs with Tyler at Boston Children's Hospital. (Photo by Darren McCollester/Getty Images for Boston Children's Hospital)