It's routine and trivial for the US Gov to enforce export controls on non-US based companies.

This "across the border" strategy will not work.

Seagate Singapore was hit with civil penalties and settlements for shipments to Huawei under the Foreign Direct Product Rule.

ZTE, a Chinese company, was criminally prosecuted and settled with U.S. DOJ/BIS in 2017 for violating U.S. export controls and sanctions.