What are the requirements for "immigration supervision" in the United States and restricting the transfer of green cards to permanent residence?

There is no rigid "immigration regulation" in the United States, and any green card holder who intends to live in the United States for a long time is allowed to retain his resident status. However, there are two provisions in American immigration law:

1) green card holders leave the United States for no more than 180 days.

2) If the green card holder leaves the United States for more than 1 year, it may be regarded as giving up the green card.

Therefore, American green card holders who have left the United States for more than one year must apply to the Immigration Bureau for re-entry permit, otherwise they will be refused entry when they return to the United States. In addition, when applying for American citizenship, American green card holders also have some quantitative legal provisions, that is, they must live in the United States for half of five years before applying for citizenship and leave the United States for no more than six months at a time, otherwise they cannot apply for citizenship.

The procedure for EB-5 applicants to change a conditional green card into a permanent green card is that before the expiration of two years, investors submit an I-829 application to USCIS. The I-829 application needs to prove that the investor's investment is still invested in the project and has (or can prove) created 10 jobs.