Both of these are fantastic suggestions. With a degree and work experience you meet the minimum requirement for federal law enforcement jobs. The language ability is sought after as well.
A caveat to this: these days, "minimums" are probably not going to get anyone hired at the federal level. Every eligible person who meets the standard is at the same point, so an applicant needs something more to separate him/her from the rest of the pack.
But with the current push to hire veterans, anyone who isn't a vet is going to have a tough road. That's not to say it isn't possible, but it's not as easy as it once was.
Anyway, for any kind of natural resource law enforcement, I'd stick with the state positions. As a state game warden, there's more freedom, (usually) less bureaucracy, and often a better retirement system.
More importantly, most states are hurting for quality applicants, for many reasons. Believe it or not, many people don't want to work outdoors in a law enforcement capacity. Hunting and fishing guide or some other "cool" environmental job profiled favorably in
Backpacker magazine? Sure.
But being the guy or gal that most outdoorsmen don't want to see, always working alone, being cold and wet, etc., with only a truck for an office. Not nearly as many people lining up for that kind of work, especially when you factor in that it's a mission that isn't universally-supported.
So due to these factors, the field is wide open for anyone who wants to make a serious run at a job.
A degree (
any degree - mine is in History and German) that gives you some decent writing skills, a clean background, and a bona fide interest in protecting natural resources - one that you can articulate to an interview panel - will likely get a person hired. Work experience that gives an applicant the ability to effectively deal with people helps greatly, too. Most states have a skills test involving identifying species within a state and basic firearms knowledge. Knowing those things are fairly easy if you're already a hunter and/or fisherman, but even if you're not, that's stuff that can be studied and learned beforehand.