If he entered the US unlawfully and is already over the age of 18, there is no way for him to legalize his status within the US under the current immigration laws. He would have to go back to his home country to consular process but departing the US will cause him to trigger an automatic 10 year bar to reentry, which can only be waived by a showing of extreme hardship to a US citizen spouse, which is fairly difficult to do in most cases.
Answered on Mar 29th, 2012 at 11:08 AM