If you are going give them water, why not a ride...or a place to stay...a job, how about your job?
my point is its a slippery slope. when do you stop? The US/Mexico line is a open wound that needs to cauterized.
terrorists are humans to right? so maybe instead of shooting them we should give them water and a place to stay, and after they kill our friends and family we will send them home... of course that is til they come back at which point we will give them some water and a place to stay etc after all they are just humans.