It's not impossible some government screwed up veterinary border checks at some point, but in all honesty unless someone finds direct proof I'm treating this as grade A bullsh*t.
(And if it got screwed up, I'd say it's much more likely to have been an accidental result of misguided austerity measures like DOGE.)
"why the hell are we paying to get rid of flies in Mexico? kill it!"
From other new source:
> The Department of Government Efficiency cut approximately 15,000 USDA jobs and terminated thousands of USAID programs, including a screwworm monitoring project.