美國國家公園服務局說，17個主要國家公園門票將漲價一倍以上：

The National Park Service proposes more than doubling the entrance fees at 17 popular national parks, including Grand Canyon, Yosemite, and Yellowstone, to help pay for infrastructure improvements.

Under the agency's proposal, the entrance fee for a private vehicle would jump to $70 during peak season, from its current rate of $25 to $30.

The cost for a motorcycle entering the park could increase to $50, from the current fee of $15 to $25. The cost for people entering the park on foot or on bike could go to $30, up from the current rate of $10 to $15.

The cost of the annual pass, which permits entrance into all federal lands and parks, would remain at $80.

The proposal would affect the following 17 national parks during the 2018 peak season:

• Arches
• Bryce Canyon
• Canyonlands
• Denali
• Glacier
• Grand Canyon
• Grand Teton
• Olympic
• Sequoia & Kings Canyon
• Yellowstone
• Yosemite
• Zion
• Acadia
• Mount Rainier
• Rocky Mountain
• Shenandoah
• Joshua Tree