Why Our country the United States will not forgive Boy George for his past drug mistakes?

I grew up LIstening to the 80s group Culture Club when I was in my young teens. I still listen to their music online, and watch their videos on YouTube till this day. They were an Amazing Group and I just Loved the Lead Singer Boy George. Anyway Boy George the lead singer of Culture Club made a very bad mistake when he was here in the USA many years ago. He was on Drugs, and lied about a Burgulary in his apartment, and drugs was found. Boy George was arrested and had to do Community Service. The thing is Boy George is older now, and is currently off drugs, and he and the Group Culture Club decided to get back together. They have written new songs, and wants to perform worldwide, and perform here in the states. A lot of people still love Culture Club music, and would love to see them perform in the States, but unfortunately the USA has refused his Visa, because of his past. Why want our Great Country allow Boy George back in the USA, and forgive him for his past? A person should be given another chance, especially when that person has changed. Is there something that can be done? I really would love to see them (Culture Club) perform in person.