Why?

For the past 60 years plus, we have stationed troops overseas to protect Europe from the Soviet threat, in Korea to protect from a North Korea threat and other various parts of the world wherever a threat or need required our presence. Could some one please tell me why we cannot station troops on our Mexican border to prevent the influx of illegal immigrants? Could it be our elected officials think more about not offending potential Hispanic voters that could benefit their political party for years to come and not those who voted them in office?