[throwaway234]

I think he's talking about the Selective Service System aka the draft.

If you're male and haven't signed the document saying you will die for your country at the whim of a random number generator, you cannot apply for federal student loans.

Also In 40 states (+DC) it is a prerequisite for men to sign up for the draft before getting/renewing a driver's license (maybe any gov ID?). I suppose if that is combined with voter ID laws, yes there could be a subset of men in the US who match the clean description and are still unable to vote. That situation does not apply to women.

That's also assuming not registering for the draft (a max sentence of $250,000 / 5 years in prison) still can be called a 'clean record'. I think so.