Wow...
Just wow. Some of the replies on this thread really proves Einstein correct, only two things are infinite, the universe and mankind's stupidity. And I'm not sure about the universe...
Cav, I applaud your decision to consider service to the country as one of our boarder protectors. What many people don't realize is the huge influx of drugs, illegal weapons/explosives and criminals from other countries that crosses our boarders on an hourly basis. It's not just poor, downtrodden masses seeking a better life here. The Irish, Germans and Italians did that fairly well over the past couple of centuries legally. Many times these days it's hardened criminals, drug runners and people catering to gang violence who cross the boarders illegally, taking advantage of our proximity to countries relatively unconcerned with contributing to a neighbor's safety for its citizens.
Government service in this area is growing pretty rapidly, with many possibilities for rapid advancement. The pay's not great, but the benefits for yourself, further education, and your family's care are nice. There's serious risks that come with the job; I hope you take that into consideration. Someone hauling a couple of kilo's of Columbia's finest won't hesitate to drop you and bury the body if they get the chance; many of the people I've known in law enforcement consider the career field you're looking at to be one of the most hazardous.
Try it! If nothing else, doing well there will certainly open doors for other careers in law enforcement.