We need to use any and every means to decrease the national debt - and creating more National Parks would help, even though the help may be small. There are many more places of beauty within our nation which could be made into National Parks, thus encouraging Americans to put their screens aside and enjoy nature's beauty. This would decrease our debt and increase our health.
While a four-to-one return is a pretty good investment on our tax dollars, revenue and in kind assets generated by the National Parks system is better spent preserving and conserving our natural national heritage. Certainly, we should fund more parks as we can, and our tax investment in the parks system means that they're endowed well into the future and safe from budget cuts.
No, the American government should not look into funding more National Parks to help relieve the national debt. While it may earn the country money in the long run, spending money upfront to get out of debt is illogical. Spending should be cut in as many ways as possible to relieve the debt.
The study that determined that "4 dollars is returned for every dollar spent on the parks" uses some pretty large stretches in order to make those claims. It's not just as easy as putting dollars into parks and profiting. I love our parks and think that we need to make sure they are well-funded, but we can't look at them like they are a way to ease our huge debt. It just doesn't work like that.