The purpose of this legislation is to provide permanent resident status to Dr. Yue-Cheng Yang, allowing him to remain in the United States legally. It aims to address specific immigration challenges he faces, ensuring he can live and work in the country without the threat of removal. Key provisions of the legislation include the eligibility for Dr. Yang to apply for an immigrant visa or adjust his status to that of a lawful permanent resident. This means he can become a permanent resident even if he has previously faced issues that would normally prevent him from doing so.