Chapter 05 – Constitutional Law and the Bill of Rights
buildings exposed to visual observation from the air. Petitioner maintains elaborate security
around the perimeter of the complex, barring ground-level public views of the area. When
petitioner denied a request by the Environmental Protection Agency (EPA) for an onsite
inspection of the plant, EPA did not seek an administrative search warrant, but instead
employed a commercial aerial photographer, using a standard precision aerial mapping
camera, to take photographs of the facility from various altitudes, all of which were within
lawful navigable airspace. Upon becoming aware of the aerial photography, petitioner brought
suit in federal district court, alleging that EPA’s action violated the Fourth Amendment and was
beyond its statutory investigative authority.
Held:
1. The fact that aerial photography by petitioner’s competitors might be barred by state
trade secrets law is irrelevant to the questions presented in this case. Governments do
not generally seek to appropriate trade secrets of the private sector, and the right to be
free of appropriation of trade secrets is protected by law. Moreover, state tort law
governing unfair competition does not define the limits of the Fourth Amendment.
2. The use of aerial observation and photography is within EPA’s statutory authority. When
Congress invests an agency such as EPA with enforcement and investigatory authority,
it is not necessary to identify explicitly every technique that may be used in the course
of executing the statutory mission. EPA needs no explicit statutory provision to employ
methods of observation commonly available to the public at large.
3. EPA’s taking, without a warrant, of aerial photographs of petitioner’s plant complex from
an aircraft lawfully in public navigable airspace was not a search prohibited by the
Fourth Amendment. The open areas of an industrial plant complex such as petitioner’s
are not analogous to the “curtilage” of a dwelling, which is entitled to protection as a
place where the occupants have a reasonable and legitimate expectation of privacy that
society is prepared to accept. The intimate activities associated with family privacy and
the home and its curtilage simply do not reach the outdoor areas or spaces between
structures and buildings of a manufacturing plant. For purposes of aerial surveillance,
the open areas of an industrial complex are more comparable to an “open field” in which
an individual may not legitimately demand privacy. Here, EPA was not employing some
unique sensory device not available to the public, but rather was employing a
conventional, albeit precise, commercial camera commonly used in mapmaking. The
photographs were not so revealing of intimate details as to raise constitutional
concerns. The mere fact that human vision is enhanced somewhat, at least to the
degree here, does not give rise to constitutional problems.
VIII. Board of Zoning Appeals, Bloomington, Indiana v. Leisz, 702
N.E. 2d (Ind. S. Ct. 1998) (See Takings—Regulatory, p. 203)
Syllabus
The Leisz’s bought rental properties in 1989. In 1985, Bloomington had passed an ordinance
limiting the occupancy in certain neighborhoods to no more than three unrelated adults per
unit. Existing noncomplying units could be grandfathered if they were registered with the
government within a four-month period. The prior owners of the Leisz property did not register
their properties. The Leisz claimed the forfeiture of the higher occupancy rate in consequence
of nonregistration was an unconstitutional taking. The court found in favor of Bloomington.
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