So, he signed up with Missouri State, and then immediately transferred to this fraud Herguan???
What was he thinking? He obviously was an active participant in the fraud.
To your questions:
First, he didn't graduate from Herguan.
Herguan never was accredited, so all he did was paying lots of money for a worthless piece of paper.
Why in the world did he even sign up with Herguan? After the TVU raid, it should have been obvious to everybody that signing up with unaccredited diploma mills is a bad idea.
Second, he basically destroyed his future in the US by going to Herguan.
Third, he will have to leave the country.
Fourth, he will have a very hard time getting any visa to the US, be it F1 or H1, because the Herguan stuff is in his file forever, and the officers at the consulate will grill him about why he went to this obvious fraud.
So, the best for him would probably be to seek employment outside the US.
Oh, and absolutely no real university in the US will accept a transfer from a non-accredited diploma mill.