I think that's why the Mexicans caved so quick
My theory is they were given a list of the 26 and told to freeze the bank accounts pronto
If not done then the Trump EO of December 2017 would drop on them all for engaging in wholesale human trafficking...( the 26 and most of top Mexican gobmint officials)
I like your theory that the Trump EO of December 2017 is being brought into play here.