[HarHarVeryFunny]

Tariffs are based on country of manufacture, not where they were shipped from, so freight forwarding would only make a difference if this is not truthfully declared.

[glimshe]

Could someone in Mexico order a Chinese product, take it out of the box, put it in a Mexican made box and export it as a Mexican product?

[rvnx]

Yes, difficult to prove. Happens all the time with China->Vietnam->US.

[xnx]

21st century US is discovering smuggling and the black market.