Immigration law mainly three types family-based, humanitarian, and employment-based immigration. There are four types of immigrants living in the United States citizens, residents, non-immigrants, and undocumented immigrants. If you apply for immigration, or in fact, if you are an eligible immigrant, some offenses can jeopardize your immigration status such as failing to obey visa terms, failing to report a change of address, getting convicted of a crime, crimes of moral turpitude, and of course controlled substance violations. According to the last update, to become a US citizen takes 14.5 months from the application date. There are five essentials questions that you must ask your lawyer: How much experience with cases like mine do you have? Will you be overseeing my case through the end? How will you communicate with me during the process? What fees do you charge? Are there other clients I can talk to about their experiences?