Is illegal immigration a felony or misdemeanor?

U.S. immigration law actually uses the term "improper entry," which has a broad meaning. read more

Civil penalties under this subsection are in addition to, and not in lieu of, any criminal or other civil penalties that may be imposed. (c) Marriage fraud Any individual who knowingly enters into a marriage for the purpose of evading any provision of the immigration laws shall be imprisoned for not more than 5 years, or fined not more than $250,000, or both. read more

It is a violation of federal immigration law to remain in the country without legal authorization, but this violation is punishable by civil penalties, not criminal. Chief among these civil penalties is deportation or removal, where an unlawful resident may be detained and removed from the country. read more