Yes there is. How else can you account for the fact that aliens (even illegals) are required to register for the draft?
The only aliens required to register are those assumed to be immigrants.
“Men who are not required to register with Selective Service include: nonimmigrant aliens in the U.S. on student, visitor, tourist, or diplomatic visas;...”
I think we both know where Obama’s father fits. Evidently he’s lumped into the same category as a diplomat. Hmmmm.