Congress and retailers want to rebuild national parks. Tolls on federal roads might pay for it

American Bison graze at the Grand Teton National Park. Danny Lehman | The Image Bank | Getty Images Congress is trying to come up with more money to give the aging national parks a facelift in honor of the country's 250th birthday this year. President Donald Trump talks about the importance of federal facilities looking good, while his budget proposal slashed funding for the National Park Service. …