Here's what to do if you receive unsolicited seeds from another country:
1) DO NOT plant them and if they are in sealed packaging (as in the photo below) don't open the sealed package.
2) This is known as agricultural smuggling. Report it to USDA and
maintain the seeds and packaging until USDA instructs you what to do
with the packages and seeds. They may be needed as evidence.
https://www.aphis.usda.gov/…/impor…/sa_sitc/ct_antismuggling
https://www.aphis.usda.gov/…/impor…/sa_sitc/ct_antismuggling