Originally Posted by Frtigern
I guess when you want to "git er dun" the only guys who can do it are the Marines. This type of mission seems exactly the opposite of what the USMC trains for. ...
You were refering to US Marines, not the Mexican Marines? Actually the USMC does train for this sort of thing as a subset of its counter insurgency doctrine/training. Insurgencies frequently use illegal activites to finance their operations & interdicting those is part of the overall COIN warfare package. 'Civil disorder' training relates to this as well, which has been a common mission of the US Marines since their start up in the late 1700s.
From circa 1910 through 1933 the Marines were almost continiously engaged in COIN or guerillia warfare in the Latin America "Bannna Wars". The 'Small Wars Manual' written by the Marines in the 1930s was for many decades the only US doctrinal text that went into the details of COIN warfare.