Will a citizen of USA get punished if s/he gets married to get another person a citizenship?

I know a friend who did this for a large sum of money, but I am afraid for her. She married a guy to get him a citizenship. Should the government find out about this, will SHE get any punishment? And if so, what kind of punishment can she get? I know he will get deported or something like that.Will a citizen of USA get punished if s/he gets married to get another person a citizenship?
There's nothing wrong with an American marrying a person from


another country.The only time the issue of fraud comes into play


is when the marriage is prearranged for profit.INS will usually detect


a illegal marriage during the interview process.Will a citizen of USA get punished if s/he gets married to get another person a citizenship?
It's fraud. Of course she'll get punished. The difficulty is in proving it though...
Tes. She is liable for a prison term and a large fine.
It is difficult to prove. Let them worry about it.
She could face a fine of $250,000 and a jail term of 5-10 years.
She'll get ten, out in 6.