Thomas Nelson, 1961; Pocock, J. G. A. Three
British Revolutions, 1641, 1688, 1776. Princeton,
N.J.: Princeton University Press, 1980; Straka,
Gerald M. The Revolution of 1688 and the Birth
of the English Political Nation. Lexington, Mass.:
Heath, 1973; Swisher, Clarice, ed. England. San
Diego, Calif.: Greenhaven Press, 2003; Trevelyan,
George Macaulay. England Under the Stuarts.
New York: Barnes & Noble, 1965.
—Andrew J. Waskey
environmental regulation
The power of the U.S. Congress to regulate envi-
ronmental problems is based on Section 8’s com-
merce clause under Article I of the U.S.
Constitution, which provides that “Congress
shall have the power . . . to regulate commerce
with foreign nations, and among the several
states.” Because Congress has no general police
power, it may only regulate those environmental
issues that fall within its commerce clause power,
and the scope of this power is rapidly changing.
Under the commerce clause, Congress may
regulate three main categories of activity: 1) the
use of the channels of interstate commerce;
2) the instrumentalities of interstate commerce,
or persons or things in interstate commerce; and
3) activities having a substantial relation to inter-
state commerce (U
NITED STATES V. LOPEZ, 514 U.S.
549, 558–59 [1995]). With the Supreme Court’s
decisions in United States v. Lopez and U
NITED
S
TATES V. MORRISON, limitations have been placed
on Congress’s power to regulate under the com-
merce clause, and signifi cant questions have been
raised regarding the constitutionality of the major
federal environmental statutes.
In the Clean Water Act (CWA), Congress
sought to limit the discharge of pollutants into
“navigable waters,” which the act defined to be
“the waters of the United States.” Because navi-
gable waters are channels of interstate commerce
and have a substantial effect on interstate com-
merce, it is constitutional for Congress to regulate
them under its commerce clause power. In the
past, however, the agencies charged with carrying
out regulation under the CWA have interpreted
it expansively, taking the position that they could
regulate both navigable lakes and rivers that cross
state lines as well as smaller streams, ditches, cul-
verts, and wetlands that are adjacent to navigable
waters or have a hydrological connection to navi-
gable waters. This issue was fi rst addressed by the
Supreme Court in United States v. Riverside Bay-
view Homes, Inc., 474 U.S. 121 (1985). There, the
Court held that the CWA could cover wetlands
that are located directly adjacent to traditional
navigable waters. The Court reasoned that “the
transition from water to solid ground is not neces-
sarily or even typically an abrupt one” and that the
federal government was acting properly within its
commerce clause power when it interpreted the
act to include these wetlands.
However, in Solid Waste Agency of N. Cook
County v. United States, 531 U.S. 159 (2001),
the Supreme Court held that the government
had gone too far in its interpretation of the Clean
Water Act. In that case, the government sought
to regulate an isolated gravel pit that fi lled with
water seasonally. The application of the CWA
to this pit was based on a theory that migratory
birds used it as a habitat and that the industries
surrounding migratory birds, such as birdwatch-
ing and tourism, had a substantial effect on
interstate commerce, bringing this regulation
within Congress’s commerce clause power. The
Court struck down this regulation, holding that
where the only tie between the regulated water
and interstate commerce was the presence of
migratory birds, its regulation under the com-
merce clause power raised serious constitutional
questions. In 2006, the Supreme Court spoke
to this issue again in Rapanos v. United States,
126 S. Ct. 2208. There, the Court struck down
regulation of wetlands that were connected to
navigable waters by human-made drains and
ditches with an only intermittent fl ow of water.
As in Solid Waste Agency of N. Cook County, the
Court noted that the government’s interpretation
of the act to cover these wetlands stretched the
outer limit of Congress’s commerce clause power
and raised difficult constitutional questions.
Undoubtedly, the question of how far the fed-
eral government may go in its regulation of water
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