Obtaining U.S. residency is a process that can be accomplished through a variety of avenues, including family reunification, employment, investment, visa lottery, and asylum. Each pathway has specific requirements and procedures that must be followed in order to obtain residency. 

In general, residency allows you to live and work in the United States permanently and provides a pathway to citizenship after a certain period of time of eligibility. 

The process can be complex and may require the support of an immigration attorney.

The requirements to apply for U.S. residency may vary depending on the immigration category. 

In general, some common requirements include having a citizen or permanent resident relative who can sponsor the application, having a valid job offer in the United States, being a refugee or asylee, having special skills or talents in areas of national interest, or being a foreign investor.

In addition, applicants must also demonstrate that they do not have a serious criminal record and that they meet the health requirements established by the immigration authorities. It is also important that applicants complete the application forms accurately and provide all necessary documentation.

It is important to keep in mind that the residency application process can be complex and requires attention and advice from trained professionals.