If an individual is eligible under the family category, a U.S. citizen or lawful permanent resident can petition for the intending immigrant so that they can apply for their Green Card. Immediate relatives (spouses, children under 21, and parents) of U.S. citizens may be eligible for a Green Card under the family category. An employer can petition for an employee’s Green Card based on employment. An individual may be deemed “inadmissible” due to health concerns, prior immigration violations, or criminal history. An individual can be eligible for a waiver of inadmissibility regarding certain crimes, but not all crimes are eligible for a waiver. If grounds of inadmissibility exist and a waiver of inadmissibility is not allowed, the individual may face difficulty getting a Green Card.