The government doesn't meddle in the NFL. The NFL issued the bans
"NFL execs admit pressure from Trump a factor on anthem policy": https://profootballtalk.nbcsports.com/2018/05/24/nfl-execs-a...
"Trump says U.S. should change tax law to punish NFL": http://www.espn.com/nfl/story/_/id/20978787/president-donald...
"The report found the Department of Defense had spent $6.8 million on what they called 'paid patriotism' between 2012 and 2015. This money was spread out among 50 pro teams from the NFL, NBA, MLB, NASCAR, MLS and others.": https://www.cnn.com/2017/09/25/us/nfl-national-anthem-trump-...