https://www.google.com/amp/s/retrieverman.net/2009/05/19/the-strangest-shark-story-ever/amp/
Bull shark caught in the Mississippi river at ST LOUIS! yup Bull sharks are some no crap predators.
If they can withstand the Mississippi, they can withstand the Rio Grande. Capture two males and two females, keep them alive in the back of a truck somehow, and transport them to Texas. CW2 will get very interesting. Trump must know nothing about it.
Gators can also be encouraged to nest at the border, too. Lasers optional.