GOC should have provided him insight into how the operations and decision making works in the American Headquarters. Along with setting up formal meetings with the Managers he would be working alongside, and built up the relationship(s) through appropriate outlets, not going out for informal after work catchups, especially before those solid foundations and professional boundaries are setup. Collins should have been advised to discuss directly with those Managers to distribute information on new approaches to their teams.
Topography climate or districts
The reason they were or are separating families at the border is as a deterrent. This is why they say they do it. But it is cruel and inhumane
Using the mnemonic. Hope this helps, have a BLESSED day! :-)