The petition was issued by the Trump Make America Great Again Committee, a fundraising organization for Trump and Vice President Mike Pence, according to Reuters.
It was published Thursday on the Republican National Committee website, stating “The President has asked for a list of supporters who stand for the National Anthem. Add your name below to show your patriotism and support.”
The move comes after NFL commissioner Roger Goodell said Wednesday that the league would not punish players who kneel during the anthem to protest police brutality and racial injustice.
Former San Francisco 49ers quarterback Colin Kaepernick started the movement last season, but it picked up steam this year as Trump called out the protests as unpatriotic and disrespectful of military veterans.
In a Twitter post on Wednesday, after NFL owners wrapped up their fall meetings without approving any change to league policy that says players “should” stand for the pledge but stops short of requiring it, Trump decried the decision as “too much talk, not enough action.”
Kaepernick, who opted out his contract after last season and remains unsigned, has filed a grievance against the NFL contending team owners have colluded against him over his protest.