Green Bay Packers' Aaron Rodgers links arms with Richard Rodgers and Randall Cobb during the national anthem before an NFL football game against the Chicago Bears Thursday, Sept. 28, 2017, in Green Bay, Wis.

Chicago Bears players link arms during the national anthem before an NFL football game against the Green Bay Packers Thursday, Sept. 28, 2017, in Green Bay, Wis.

Fans lock arms during the national anthem before an NFL football game between the Green Bay Packers and the Chicago Bears Thursday, Sept. 28, 2017, in Green Bay, Wis.

Dallas Cowboys owner Jerry Jones, center, stands with players during the national anthem prior to their Week 3 regular season game against the Arizona Cardinals at University of Phoenix Stadium in Tempe, Arizona.

The Arizona Cardinals, including cornerback Patrick Peterson (21), president Michael Bidwill, wide receiver Larry Fitzgerald (11) and head coach Bruce Arians stand and link arms during the national anthem prior to an NFL football game against the Dallas Cowboys on Monday, Sept. 25, 2017, in Glendale, Ariz.

The Dallas Cowboys, led by owner Jerry Jones, center, take a knee prior to the national anthem prior to an NFL football game against the Arizona Cardinals, Monday, Sept. 25, 2017, in Glendale, Ariz.

Member of the Washington Redskins stand arm in arm during the playing of the National Anthem before an NFL football game against the Oakland Raiders in Landover, Md., Sunday, Sept. 24, 2017.

Members of the Oakland Raiders sit on the bench during the national anthem before an NFL football game against the Washington Redskins in Landover, Md., Sunday, Sept. 24, 2017.

Los Angeles Chargers Owner and Chairman to the Board Dean Spanos locks arms with players on the field during the National Anthem before an NFL regular season football game against the Kansas City Chiefs on Sunday, Sept. 24, 2017 in Carson, Calif.

Kansas City Chiefs cornerback Marcus Peters (22) sits for the national anthem during an NFL football game against the Los Angeles Chargers on Sunday, Sept. 24, 2017, in Carson, Calif.

The Cincinnati Bengals lock arms during the national anthem before an NFL football game against the Green Bay Packers Sunday, Sept. 24, 2017, in Green Bay, Wis.

Seattle Seahawks quarterback Russell Wilson (3) and center Justin Britt (68) walk to the field with arms linked after the national anthem had been played before an NFL football game between the Seahawks and the Tennessee Titans Sunday, Sept. 24, 2017, in Nashville, Tenn. Neither team was present on the field for the playing of the anthem.

Tennessee Titans wide receiver Eric Weems (14) and wide receiver Darius Jennings (15) walk to the field with arms linked after the national anthem had been played before an NFL football game between the Titans and the Seattle Seahawks Sunday, Sept. 24, 2017, in Nashville, Tenn. Neither team was present on the field for the playing of the anthem.

Officials stand on the sideline of the Seattle Seahawks during the playing of the national anthem before an NFL football game between the Seahawks and the Tennessee Titans Sunday, Sept. 24, 2017, in Nashville, Tenn. Neither team came out onto the field for the anthem.

Jacksonville Jaguars owner Shad Khan stands with players during the national anthem prior to the game against the Baltimore Ravens at Wembley Stadium on Saturday, Sept. 24, 2017 in London.

Philadelphia Eagles owner Jeffrey Lurie stands during the national anthem before an NFL football game against the New York Giants, Sunday, Sept. 24, 2017, in Philadelphia.

The Pittsburgh Steelers side of the field is nearly empty during the playing of the national anthem before an NFL football game between the Steelers and Chicago Bears, Sunday, Sept. 24, 2017, in Chicago. (AP Photo/Kiichiro Sato)

New Orleans Saints players sit on the bench during the national anthem before an NFL football game against the Carolina Panthers in Charlotte, N.C., Sunday, Sept. 24, 2017.

New York Giants players and personnel stand for the national anthem before an NFL football game against the Philadelphia Eagles, Sunday, Sept. 24, 2017, in Philadelphia.

Jacksonville Jaguars players lock arms and kneel down during the playing of the U.S. national anthem before an NFL football game against the Baltimore Ravens at Wembley Stadium in London, Sunday Sept. 24, 2017.

Baltimore Ravens players kneel down during the playing of the U.S. national anthem before an NFL football game against the Jacksonville Jaguars at Wembley Stadium in London, Sunday Sept. 24, 2017.

Jacksonville Jaguars players lock arms and kneel down during the playing of the U.S. national anthem before an NFL football game against the Baltimore Ravens at Wembley Stadium in London, Sunday Sept. 24, 2017.

Several New England Patriots players kneel during the national anthem before an NFL football game against the Houston Texans, Sunday, Sept. 24, 2017, in Foxborough, Mass.

The Pittsburgh Steelers players take the field immediately following the playing of the national anthem before an NFL football game against the Chicago Bears, Sunday, Sept. 24, 2017, in Chicago.

Baltimore Ravens head coach John Harbaugh, center left, links arms with his daughter Alison and wide receiver Jeremy Maclin (18) during the playing of the U.S. national anthem before an NFL football game against the Jacksonville Jaguars at Wembley Stadium in London, Sunday Sept. 24, 2017. Also pictured are Breshad Perriman (11) and Chris Matthews (13).

Members of the Cleveland Browns take a knee during the National Anthem before an NFL football game against the Indianapolis Colts in Indianapolis, Sunday, Sept. 24, 2017.

Miami Dolphins players Vincent Taylor (96), Kiko Alonso (47), William Hayes (95), Charles Harris (90), Cody Parkey (1) and Cameron Wake (91) lock arms with teammates during the playing of the national anthem before an NFL football game against the New York Jets Sunday, Sept. 24, 2017, in East Rutherford, N.J.

Atlanta Falcons owner Arthur Blank stands with his players during the national anthem before an NFL football game against the Detroit Lions, Sunday, Sept. 24, 2017, in Detroit.

Members of the Indianapolis Colts lock arms as they take a knee during the Nation Anthem before an NFL football game against the Cleveland Browns in Indianapolis, Sunday, Sept. 24, 2017.

Buffalo Bills players take a knee during the national anthem prior to an NFL football game against the Denver Broncos, Sunday, Sept. 24, 2017, in Orchard Park, N.Y.

New York Jets players lock arms during the playing of the national anthem against the Miami Dolphins before an NFL football game Sunday, Sept. 24, 2017, in East Rutherford, N.J.

Atlanta Falcons defensive tackles Grady Jarrett (97) and Dontari Poe (92) take a knee during the national anthem before an NFL football game, Sunday, Sept. 24, 2017, in Detroit.

Members of the Indianapolis Colts take a knee during the nation anthem before an NFL football game against the Cleveland Browns in Indianapolis, Sunday, Sept. 24, 2017.

New England Patriots head coach Bill Belichick, left, and Tom Brady (12) Phillip Dorsett (13) Matthew Slater, second from right, and David Harris (45) stand during the national anthem before an NFL football game against the Houston Texans, Sunday, Sept. 24, 2017, in Foxborough, Mass.

Denver Broncos tight end Virgil Green (85) gestures as teammate Max Garcia, left, takes a knee during the paying of the national anthem prior to an NFL football game against the Buffalo Bills, Sunday, Sept. 24, 2017, in Orchard Park, N.Y.

Tampa Bay Buccaneers wide receiver DeSean Jackson, center, takes a knee during the national anthem before an NFL football game against the Minnesota Vikings, Sunday, Sept. 24, 2017, in Minneapolis.

Detroit Lions defensive end Armonty Bryant (97), defensive tackle A'Shawn Robinson (91) and defensive end Cornelius Washington (90) take a knee during the national anthem before an NFL football game against the Atlanta Falcons, Sunday, Sept. 24, 2017, in Detroit.

Buffalo Bills players listen to the national anthem prior to an NFL football game against the Denver Broncos, Sunday, Sept. 24, 2017, in Orchard Park, N.Y.

Miami Dolphins offensive tackle Laremy Tunsil (67), Maurice Smith (27), Jarvis Landry (14) lock hands with teammates during the playing of the national anthem before an NFL football game against the New York Jets Sunday, Sept. 24, 2017, in East Rutherford, N.J.

Members of the Houston Texans team stand with arms locked during the national anthem before an NFL football game against the New England Patriots, Sunday, Sept. 24, 2017, in Foxborough, Mass.