system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does the US congress get involved with things like NFL concussions and MLB steroid use?
gpt
Sports leagues typically enjoy de facto exemptions from antitrust laws, becasue their product *is* competition, and they have an interest in keeping things somewhat balanced, requiring collusion that otherwise would be illegal.

When it appears teams are abusing that privilege to violate labor laws and worker safety, congress gets involved.

Also, congressmen like to be on TV.