The apology comes after an inspector general's investigation.
Daniel Wenk, a highly regarded National Park Service official, hopes to finish key projects, including moving bison to Native American land.
Limitations on oil, gas and mineral exploration under an Obama-era agreement would be removed by a Trump administration amendment.
If finalized, the transfers would represent a second round of abrupt moves within the Interior Department.
The Trump administration wants to sell leases to oil and gas companies as soon as next year.
Americans widely condemned the first proposal to raise entry fees to $70 at some parks. The new $5 increase proposal tracks closer to inflation.
Repairing worn-out infrastructure is expensive, and the Trump administration is getting creative.
As Texas comptroller, Susan Combs compared endangered species listings to “incoming Scud missiles” that should be shot down. She said a threatened state songbird was a danger to military readiness.
Interior softened its stance on sharply hiking entrance fees at select parks in deference to more than 100,000 angry public comments from across America.
An anonymous Park Service employee described an incident on either Jan. 10 or 11 involving P. Daniel Smith, currently the top-ranking official at the National Park Service.