I'm interested in your question.

I'm not sure they will directly affect remote workers. Or at least the mechanism seems unclear.

Tariffs are currently collected at a port of entry by Customs (CBP staff.)

Since remote work does not flow through a port, its not clear who would collect this tax (presumably your US employer) or how they would submit it for payment.

In other words I'm not aware if remote work is classed as an "import" , or how it would be collected and submitted.

I am keen to hear of any actual legal opinions in this space.