United States v. Apel
The Supreme Court ruled that a federal trespass law applies to a public road and designated protest area inside Vandenberg Air Force Base, even though the Air Force had granted a public right-of-way easement through that part of the base.
The unanimous decision means military commanders don't lose authority to exclude people from any part of a base just because they've opened it to public roads, schools, or protest zones, as long as the area lies within the base's boundaries and the commander's jurisdiction.
“Those limits do not change when the commander invites the public to use a portion of the base for a road, a school, a bus stop, or a protest area, especially when the commander reserves authority to protect military property by, among other things, excluding vandals and trespassers.”
The Court's core holding on why opening parts of a base to the public doesn't shrink the commander's authority.
How it got here: A magistrate judge convicted the protester; the district court affirmed, but the Ninth Circuit reversed, and the government asked the Supreme Court to review that reversal.
The Case in Depth
What happened
An antiwar protester repeatedly demonstrated at Vandenberg Air Force Base after being formally barred for earlier trespassing and vandalizing a base sign. He kept entering a designated protest area near a public highway that crosses the base under an easement, and was cited criminally each time for violating the barment order and a federal law against reentering a military installation.
The question before the Court
Does a federal trespass law covering "military installations" reach a public road and protest area on an Air Force base, even though a public easement runs through it?
The Court's answer
Yes — the Court ruled that the protest area and public highway inside Vandenberg Air Force Base still count as part of the "military installation" under the federal trespass law, even though a public easement runs through them. The law doesn't require the military to have exclusive control of every inch of a base; it only requires that the area have defined boundaries and fall under a military commander's authority.
Because the Air Force never gave up jurisdiction over the easement roads or the protest area — the commander still set rules for protests, closed roads for security, and could bar individuals — those areas remained part of the installation. Opening land to public travel or protest doesn't shrink the base's legal boundaries or a commander's power to exclude specific people from it.
Curious how the Court got there? See the step-by-step legal reasoning →
Why it matters
Military bases across the country have public roads, bus stops, schools, and visitor areas running through them. This ruling confirms that commanders keep the power to bar specific people from those areas for security reasons, without losing legal authority just because civilians are allowed to pass through or gather there.
What changes now
The case is sent back to the lower courts. Because the Ninth Circuit never addressed the protester's argument that applying the trespass law to him on this base would violate the First Amendment, that constitutional question remains open for the courts below to resolve on remand. This decision resolves only the statutory question of what counts as a 'military installation.'
What this does not decide
The Court expressly declined to decide whether applying the trespass statute to bar the protester from the designated protest area violates the First Amendment. That question was not addressed by the Ninth Circuit and remains open for further proceedings on remand.
Concurrences and dissents
Concurrence — Justice Ginsburg
Justice Ginsburg agreed that opening parts of the base to the public doesn't change the base's legal boundaries, but stressed that this doesn't resolve the separate First Amendment question. She noted the protest area sits near a highway, school, bus stop, and visitors' center that are all freely open to the public, suggesting the government's security rationale for excluding the protester may be hard to justify under free-speech principles on remand.
Concurrence — Justice Alito
Justice Alito wrote separately only to note that because the Ninth Circuit never ruled on the constitutionality of the statute, the Court should not weigh in on that question now. He emphasized that the Court's silence on the First Amendment issue should not be read as agreeing or disagreeing with Justice Ginsburg's concurrence.
How the Court got there
The legal reasoning, step by step
- The Court read the trespass statute's list of covered military places broadly, finding nothing in its text that limits coverage to places where the military holds exclusive possession or restricts public access.
- Looking at historical usage, the Court found that forts and posts have long included areas open to civilians, such as merchants operating inside 19th-century army posts, undercutting the idea that 'military installation' has always meant land withdrawn entirely from public use.
- The Court concluded that what actually defines a covered military place under the statute is that it has fixed boundaries and falls under a military officer's command authority, not that the military holds exclusive use or control over every part of it.
- Applying that standard, the Court found the entire Vandenberg base, including the easement roads and the protest area, remains under the base commander's jurisdiction because the Air Force never relinquished command authority over those areas even after opening them to public travel and protest.
- The Court rejected a rule that would force commanders to continuously demonstrate active military use of every parcel to retain authority to exclude people, reasoning that such a rule would create impractical burdens for courts and discourage commanders from opening any part of their bases to the public.
Doctrinal impact
Cases affected by this decision
Reaffirms United States v. Phisterer (94 U.S. 219)
The Court relied on this 1877 case's definition of 'military station' to show exclusive military control was never required.