Will the immigration department come to check at home during the application for a green card in the United States?

This family hasn't reviewed yet. But even if it is encountered, it is also a review of the application materials, especially the authenticity of the marriage. Just answer truthfully. The door-to-door review of other types of green card applications is only to understand the authenticity of the application and to conduct it in the form of questions and answers.

So there is nothing to worry about.