For regional and national competitions past State/National Cups, betweem USYS and the club should be the ones footing the travel/lodging bill.
1. The regional and national competitions are actually good for the sport and it gives teams some sort of meaning to their meaningless rec season at the end. So its not in the best interest for USYS to not foot the bill specially when they can get good corporate sponsors to pony up some good cash!
2. There are 2 type of clubs that send teams to regionals/national competitions which are the perennial big box clubs (The clubs with millions in the bank account reserved exclusively to pay for tracksuit wearing used car salesmen directors) and the small club that got lucky their talent hasn't been poached by the tracksuit clubs and made it there, but their bank accounts are not that deep at all. For the big box clubs is in their best interest to foot the bill, because it shows the customer (Parents) that the club is using some change to rewards the teams that are actually bringing some sort of prestige(Sales pitch) to the club. Now the small guy can use that tournament profit, fundraise and create awareness that their club can compete with the almighty forces of the big clubs, and get some sort of prestige.
Lastly that's utopian thinking because most of these tracksuit people don't think ahead of themselves, and small club leadership, well they are what they are.