Advocates say park workers are being pulled from important roles to help manage traffic and maintain basic infrastructure.

The Trump administration's federal workforce cuts have reached Utah's wildly popular national parks, prompting fears that millions of visitors will arrive to chaotic conditions at the Mighty Five. Threat level: Traffic lined up for more than a half-mile at the Springdale entrance of Zion during Presidents Day weekend because gate booths were understaffed.

The Trump administration has fired about 1,000 newly hired National Park Service employees as part of its broad-based effort to downsize government.