One of the questions asked by the potential green card holders is the investigation phase to be carried out by USCIS. This stage can be considered as a standard control. Suppose you are applying for immigration to the United States. In that case, you already know that your application will include several steps under the name immigration background check. These steps begin with a medical examination . This includes collecting fingerprints and performing a background check by the Federal Bureau of Investigation (FBI) . This decision often leads to uncertainty among candidates. They don't always know what the U.S. Citizenship and Immigration Services (USCIS) need to analyze or worry about. Who Needs the Controls Made by USCIS? The background check phase is very important in terms of eligibility for the green card . If you want to immigrate to the USA, you must fill out a form. This is a requirement regardless of your age, nationality, nationality, or relig...