Hello everyone. Long time lurker, first time poster.

I recently moved from NYC to Denver and now find myself having to connect to everywhere outside the US except LHR and FRA.

So, I'm heading DEN down to EZE and find myself having to connect through DFW.

Sadly, I have to check a bag as I'll be laden with Hanukkah gifts, so my question is this:

1) Is it safer to check the bag all the way through from DEN to EZE, or should I claim it in DFW and recheck it?

2) I have about a six hour layover in DFW (don't ask), and wonder, if I do reclaim the bad in DFW, is there anything to do before security, or will I be stuck in a lobby without amenities?

3) Is there any additional risk of losing a bag on a layover if I don't reclaim it given that the layover is so long?

Thanks, everyone. Your help is appreciated.