The personnel of this patrol has been increased from about 400 in 1925 to approximately 1000 in 1930. This service works more closely with the Customs Bureau than it does with the prohibition forces, as the immigration inspectors are accustomed to work on the border with customs inspectors. This border patrol does, however, aid in the apprehension of aliens who are engaged in smuggling liquor. Cooperation between all the forces above referred to would have been difficult at best. Each of the forces other than prohibition has duties to perform of a different nature than seizing liquor or apprehending smugglers of intoxicants.
Effective cooperation is only possible where there is mutual respect and confidence.
The older services had no such feelings for the newer. These conditions explain the fact that save in a few places and under special conditions, there was no cordial, effective cooperation between these branches of the federal service. The attempts at better coordination have resulted in some progress, but much remains to be done. It is a little spotty now, due to individual temperament. There is no difference of opinion or lack of complete harmony in the directing heads, but as you go down the service, the service rivalry crops out.