From Fedora Project Wiki
The sentence "If it violates United States federal law, it cannot be included in Fedora." made me wonder: why "US federal law" instead of "US law"? This could use some clarification (maybe a link to a small page). I changed this part to contain an empty link so anyone who could elaborate on why it has to conform to US federal law, and maybe how this is enforced.
P.S. I am a European citizen and just don't have enough knowledge of US-law.