Feds seize 4,600 helicopter drones that violate FCC regulations :
https://www.detroitnews.com/story/news/local/detroit-city/2020/06/03/feds-seize-helicopter-drones-china-violating-fcc-laws/3133586001/

Also hobbyking was fined $2.8 million dollars :
https://docs.fcc.gov/public/attachments/DOC-365706A1.pdf

This is why making sure that the products from china are compliant with FCC emissions and transmissions ; otherwise they are illegal to own or to operate.

Something most drone owners may not be aware of when they are either building a drone from parts or buying a completely assembled one.

Anyways a good idea to make sure that it is FCC approved on the FCC website :
https://www.fcc.gov/oet/ea/importation

Plus you must register your drone with the FAA as well :
https://www.faa.gov/uas/getting_started/register_drone/