If a man from Mexico has been in the US illegally for 4 years how can he become legal resident of US?

1. Qualify for an immigration visa: The individual must meet the eligibility criteria for an available immigrant visa category, such as family-based immigration, employment-based immigration, or the diversity visa lottery.

2. File an immigration petition: An eligible petitioner, such as a U.S. citizen spouse or employer, can file an immigration petition on the individual's behalf with U.S. Citizenship and Immigration Services (USCIS).

3. Adjust status or consular processing: If the individual is already in the U.S., they may be able to adjust their status to that of a lawful permanent resident through an adjustment of status application with USCIS. If the individual is outside the U.S., they will need to go through consular processing at a U.S. embassy or consulate abroad.

4. Attend an interview: All applicants must attend an interview with a USCIS officer or a consular officer to demonstrate their eligibility for an immigrant visa and lawful permanent resident status.

5. Pay required fees: The individual must pay the applicable visa and application fees associated with the immigration process.

6. Pass medical examination: The individual must undergo a medical examination by a USCIS-designated medical provider.

7. Receive approval: If the individual meets all the requirements and their applications are approved, they will be granted lawful permanent resident status and issued a Green Card.