If you haven't landed in the United States for more than one year, does the green card expire, does it mean giving up the green card?

Not landing in the United States for more than one year does not mean that the green card will automatically expire. On the one hand, if you don't log in for a long time, you may face long-term questioning from the customs next time you enter the United States, ranging from warning to disqualification from the immigration office. If you are considering giving up your green card, it is recommended to declare voluntarily to immigrants, which will help you apply for other visas to enter the United States in the future. Special reminder: when filing tax returns, the IRS does not recognize the passive waiver of green cards. Unless the green card holder formally submits a written application to the Inland Revenue Department, even if the green card is deprived, it is still defined as a tax resident of the United States by the Inland Revenue Department, and it is still necessary to declare global personal income tax and global financial assets normally. /zd/ym