I agree. The punishment does not fit the crime. He should be banned from science funding, do a short stint in jail, and then do community service that works to improve science in some way.
Unfortunately for him, he isn't a military contractor or investment banker. They tend to fare better in these circumstances.
I agree that it seems excessive, but I think it's also important to take into account the impact that fabricated research has. Hundreds, if not thousands, of other researchers have likely based some of their work off of Han's studies, leading to a waste of incredible amounts of resources (government money, researchers' time, etc.).
I understand disallowing him from the career, and paying back the money, and even the jail time, but I don't see how deporting him away from his family has anything to do with medical research. From the article it didn't sound like he was in it for money, or even fame, so why make him leave the country?
As an incoming freshman at Iowa State, this is great news. Nothing like research fraud to help a reputation.