Skilled immigrants in the United States were not party member when they immigrated. Do you want students who have just turned 18 years old to do background checks?

Whether it's party member or not, you have done most of the background checks before arranging your interview.

That's what the consulate of immigration does. They have extensive investigation channels. You'd better say hello to the referee. Usually not, just in case.

Party member cannot immigrate. We must leave the party.

The investigation of people with political background in the United States is very strict. Ordinary people, it is estimated that the government has confirmed whether there is any criminal record.