President Donald Trump being presented with a helmet by Patriots head coach Bill Belichick and owner Robert Kraft during an April 19 ceremony on the South Lawn of the White House, where the president honored the Patriots for their Super Bowl LI victory. AP Photo/Andrew Harnik

President Donald Trump is continuing his crusade against NFL players who protest during the national anthem, this time suggesting tax laws should change to hurt the league.

"Why is the NFL getting massive tax breaks while at the same time disrespecting our Anthem, Flag and Country? Change tax law!" Trump tweeted on Tuesday morning.

The NFL gave up its tax-exempt status in 2015, but individual teams and the league itself often extract hundreds of millions in taxpayer dollars to help build new stadiums.

Additionally, when the National Football League and the American Football League merged, Congress waived usual antitrust legislation, allowing them to essentially create a monopoly on professional football.

Trump, however, stands accused of political grandstanding and wasteful spending of his own after Vice President Mike Pence seemingly flew from Las Vegas to Indianapolis over the weekend just so he could leave a Colts game early after a few dozen players knelt during the playing of the national anthem.

"I asked @VP Pence to leave stadium if any players kneeled, disrespecting our country," Trump tweeted after the incident. "I am proud of him and @SecondLady Karen."

The trip most likely cost taxpayers up to $250,000.

Trump is trying to push a tax plan through Congress, but his agenda has stalled amid infighting within the GOP.