How to take parents to America after emigration?

Good, I can go out. . It is no problem to receive parents' visits, but it is ok in a short time. But if you live for a long time, you need to consult local laws and living conditions.

After all, I have lived in the United States for a long time, and I will enjoy all kinds of benefits in the United States if I get a green card, but there are conditions. . The restriction is still to go to the United States, because the welfare in the United States is better. Although taxes are high after all, they are basically used for national welfare, which is also very fair.