Who insures unlicensed drivers?

There is a company called Vision Insurance Co, operating under the Fred Loya Insurance agency out of Texas that insures unlicensed drivers, as well as drivers that reside in the United States illegally. Why this is allowed, I have no idea, but I am currently involved in a claim with this company and am a bit anxious to see if it will be handled properly. If they pay on the claim then all is well. If not, well...I guess I'm screwed.