Can a person who was convicted of aggravated criminal sexual abuse and deported to Mexico come back to the United States?

Conviction for aggravated criminal sex abuse is a very serious deportation ground. Although, not entirely impossible, the legal return to the United States of an alien so convicted is very difficult to achieve. There are several issues involved that can only be dealt with by an experienced immigration attorney with the active support of the qualifying US citizen family members of the deported alien who remain in the US. In addition, such attorney must have strong expertise in handling post-conviction relief work in criminal law. Both you and your US family members must consult such an attorney Also, apart from the obviously daunting legal issues involved in a case such as this, the attorney must be possessing of tremendous patience and resilience that will be crucial to handling such a case since it often goes of for many years. Again, while your possible return is not entirely out of the realm of possibility, it presents significant challenges. Meanwhile, I caution that you should not attempt to return to the US without DHS authorization. Severe penalties (including about 6 plus years of mandatory jail term) awaits aliens who illegally return to the US after deportation for aggravated felony

Your question requires an attorney consultation. It is not a simple question that can be answered on this type of forum. There are many factors that would need to be considered and evaluated. Depending on the exact crime he was convicted of, he may be inadmissible and barred from returning to the U.S. for life. I strongly suggest that you contact an experienced immigration attorney for a face-to-face consultation and give him/her all of the facts surrounding his situation. Make sure that you bring full copies of his criminal history and convictions for review. He/she would then be in a better position to analyze his case and advise you of his options.