[snowwrestler]

Tariffs would not stop the screw worm, which lives half of its life as a winged fly.

[paconbork]

A fly that naturally spreads one mile per day does not travel from Panama to Texas in four years.

[squibonpig]

365*4=1420

Distance from Panama to Texas is like 1700 miles.

It's not a large difference, wouldn't need much unnatural transport.

[undersuit]

Maybe it came by a faster method.