There are several types of visas for different purposes, they are classified as Non-Immigrant Visa, which are granted for specific times; and the Immigrant Visa, also known as the Green Card.
There are two ways you can receive your Residence Card (Green Card); the first one is through a direct relative, if someone in your family is a permanent resident or a United States citizen, they can make a request so that you can have legal residence.
The second way is to enter the country legally with a nonimmigrant visa, and apply for an adjustment of status.
An experienced lawyer can always guide you correctly to carry out the process successfully.
Naturalization is a legal process with which a permanent resident can receive US citizenship, after having lived in the United States for at least 5 years, passing a civics test in English and taking the oath to become a naturalized citizen.
In case of being the spouse of a United States citizen, naturalization only requires 3 years of legal residence in the United States.
The United States can provide asylum to those who are fleeing their native country for persecution based on race, religion, nationality, membership in social groups, or political opinion; Immigrants can apply for asylum at ports of entry to the United States by filing Form I-859, along with their application and a withholding of removal, to avoid being deported from the United States for one year.
To extend the time of your visa or apply for an adjustment of status, you must file Form I-539 before the expiration date of your visa.
It is necessary to have the advice of a trusted lawyer to carry out this procedure.