What are the negative effects after giving up the American green card?

Reader Cao Wen asked: I got a green card three years ago, and now I am 76 years old. However, because my 93-year-old mother in Chinese mainland and I are in poor health, I often need to go back to Chinese mainland to visit and see a doctor. Sometimes it is difficult to control my time. I will stay in Chinese mainland for more than six months. Should I give up my green card? I wonder what are the rules for giving up the green card? Can I come to the United States as a family member for a short period (no more than six months) after giving up my green card? According to a friend, you can go to the mainland consulate to give up your green card and visit relatives in the United States within five years after getting a visa, without a visa? The mainland returned to the United States this time, because it stayed in the mainland for five and a half months. The immigration people read it for a long time and stamped a warning stamp on my passport, saying it was more than six months. Will this affect my future entry and exit? A: You can give up your U.S. green card status in front of U.S. consulate officials in China, but I don't know if you can get a five-year multiple-entry visa, and I haven't heard of similar cases. The American consulate has its own visa issuance standards, and you won't get a long-term visa just because you give up your American green card. You should pay attention to the warnings of immigration officials. If you leave the United States regularly for a long time, the immigration office does have the right to take your green card.