After spending half of an afternoon trying without success to create an account with the USDA, I've decided that I will have to mail an application too. The site wouldn't accept my driver's license photos for some reason, nor would it accept that my phone number was my phone number. If anybody else wants to create an account, keep in mind that you will need photos of both the front and back of your license.
Theoretically, you can get your identity verified at a local post office instead of online, but only if the site actually accepts the phone number you give it--and I tried all three of ours!