In this Oct. 29, 2017, file photo, Houston Texans players kneel and stand during the singing of the national anthem before an NFL football game against the Seattle Seahawks, in Seattle. (AP Photo/ …

In this Oct. 29, 2017, file photo, Houston Texans players kneel and stand during the singing of the national anthem before an NFL football game against the Seattle Seahawks, in Seattle. (AP Photo/Elaine Thompson, File)