In national parks, carry is allowed in the park generally, but is prohibited in "federal facilities," i.e. most buildings. Additionally, local state laws regarding no-go areas apply, and park-operated vehicles may also be off-limits. More info here.Jiggy300 said:The info I have found is spotty but say yes in national and state parks.
(g) As used in this section:
(1) The term “Federal facility” means a building or part thereof owned or leased by the Federal Government, where Federal employees are regularly present for the purpose of performing their official duties.