washington u.s. border patrol chief mark morgan ask step agency move toward tough enforcement immigration laws trump administration department homeland security official tell reuters thursday morgan longtime former federal bureau investigation official expect leave post end month spokesman u.s. customs border protection say president donald trump announce broad plan crack border security wednesday include direct construction wall along border mexico border patrol union endorse trump presidential campaign applaud executive order critical morgan support former president barack obama plan safeguard certain undocumented immigrants deportation executive board national border patrol council call morgan arrogant disgrace border patrol opinion piece publish conservative website breitbart news nov. 30. unlike many border patrol officer morgan climb chain command within agency spend career fbi act u.s. customs border protection commissioner kevin mcaleenan issue statement thank morgan service behalf men women u.s. customs border protection u.s. border patrol want thank mark morgan unwavering dedication border security mission recognize life-long career service nation statement say u.s. border patrol chief morgan ask leave agency