What does it mean to strictly control illegal residence?

"Strictly control illegal residence" is an expression that is usually used to describe the adoption of stricter control and management measures against illegal stay or illegal residence. Illegal residence, specifically, when you enter the country, if the time on the small white card issued by the Immigration Bureau, that is, the I-94 form, is exceeded, it is called illegal residence. Even if it is a multiple-entry visa, it is considered illegal residence if it exceeds the time limit. Illegal residence may violate the country's immigration laws and regulations, and may have a negative impact on social security and public order. Therefore, countries usually take various measures to strengthen the management and crackdown on illegal residence issues in order to maintain the country's border security and social order. The expression "Strict control of illegal residence" emphasizes the strict prohibition and crackdown on illegal residence, and implies a high level of concern and emphasis on such behavior. It sends a cautionary message, cautioning people not to attempt to stay illegally and reminding existing illegal stayers or residents that they need to face stricter enforcement and penalties.