export restrictions in EULA

I'm not sure what list this is really appropriate for, so apologies if this is the wrong forum. I noticed that the Fedora EULA still include notes about export restrictions, specifically: "... understands that certain of the software are subject to export controls under the U.S. Commerce Departments Export Administration Regulations (EAR) ..." Cuba, Iran, North Korea, etc. are all restricted areas. Out of curiosity how is that being enforced on the Fedora infrastructure end, and how is that restriction handling passed to mirrors? Is each mirror required to implement their own set of restrictions? Does a Fedora mirror server in Canada (or some other non-restricted country) sidestep that issue? If so, doesn't that basically make the EULA clause moot (from a once the dam is broken kinda perspective)? Jason