Please check the government link
<a rel="nofollow" target="_blank" href="
https://www.irs.gov/individuals/international-taxpayers/how-to-report-wage-income-paid-by-foreign-go...>
Green Card Holders (Lawful Permanent Resident) Working in the United States
If you are a green card holder employed by a foreign government or international organization, you are not subject to self-employment taxes and may not voluntarily participate in the U.S. social security system.
