Fourth Amendment Vehicle Searches and Consent to Search Law

Introduction to the Fourth Amendment

There are a number of amendments to the U.S. Constitution, but perhaps none so broad-reaching as the Fourth Amendment. Covering a vast number of privacy issues, the Fourth Amendment has been the subject of Supreme Court battles for decades, particularly in the areas of vehicle searches and consent to search. This paper discusses the Fourth Amendment — specifically the provisions related to vehicle searches — and examines federal and state case law involving that amendment.

The Fourth Amendment of the U.S. Constitution, also known as the search and seizure law, states:

"The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized." (United States Constitution, Fourth Amendment)

Historical Origins and the Automobile Exception

Put more simply, the Fourth Amendment protects individuals from unreasonable searches by government officials. According to the amendment, only searches conducted with probable cause or with a warrant are constitutional. In addition, only warrants that specifically identify the persons and things to be searched fall under this amendment.

When originally drafted, the Fourth Amendment sought to protect the colonists from unreasonable search and seizure in smuggling cases. Prior to the amendment, English authorities used writs of assistance — general warrants that authorized officials to search anything and seize any goods. These writs remained in effect for the lifetime of the king. In 1760, when King George II passed away, these writs were challenged by James Otis on the grounds that they violated the English constitution (FindLaw, "History"). As a result, when the amendments to the United States Constitution were drafted, protection against unreasonable search and seizure was included among the rights of the people.

However, courts have handed down decisions that question whether this amendment is to be read as a single unified provision or as two distinct clauses (FindLaw, "Scope of the Amendment"). Courts over the years have been divided as to whether the amendment's intent was to protect against searches conducted without a proper warrant, or whether it was designed to recognize that some searches are "reasonable" even without a warrant. While seemingly semantic, this distinction has given rise to a number of recognized exceptions within Fourth Amendment doctrine.

One such exception involves the searching of vehicles. With the introduction of the automobile in the United States, the Supreme Court made an early ruling specific to vehicle searches. In 1925, Carroll v. United States brought to the forefront the issue of search and seizure in relation to vehicles. The case involved the search and seizure of illegal alcohol from Carroll's vehicle during Prohibition. Carroll sued for a violation of his Fourth Amendment rights, since the officers had neither a warrant nor, he argued, probable cause. The Court noted that congressional intent to distinguish between searching a home and searching a road vehicle was established through legislative history, and that such a distinction was consistent with the Fourth Amendment. The Court also found that the officers did have probable cause, since the defendants were known bootleggers in the area and the smell of alcohol could be detected within the vehicle. The final decision held that the Fourth Amendment did not condemn all searches and seizures, but only those deemed unreasonable (Carroll v. United States, 267 U.S. 132, 1925). The decision further noted that a vehicle may be searched if the officer has probable cause to believe the vehicle contains contraband, pointing out that requiring a warrant would allow the vehicle to be moved or cleared in the time needed to obtain one.

Consent to Search: Foundational Case Law

In addition to the separation of warrant-required searches from probable-cause searches, the issue of waiving constitutional rights and consenting to a search has also been central to Fourth Amendment litigation. As early as Amos v. United States in 1921, the issue of consent to search was raised. In that case, officers who had illegally obtained evidence through a search of Amos's home argued they had a right to do so because the wife of Amos had allowed them inside, thereby consenting to a waiver of the Fourth Amendment right. The officers had no search warrant, the defendant was not home at the time, and the officers had presented themselves in a manner implying that refusal was not an option. The Court decided that implied coercion, combined with the wife's lack of information about her rights, meant that any consent given was not truly voluntary and thus was not valid (255 U.S. 313, 1921). The decision did, however, clarify that an individual has the right to waive his or her Fourth Amendment protections and allow a warrantless search.

Given the delicate nature of this right, the Court also established through prior case law that the prosecution bears the burden of proving that any consent was truly voluntary and that the individual was aware of the right to choose (FindLaw, "Consent Searches"). In Bumper v. North Carolina in 1968, the Supreme Court ruled that evidence found during a rape investigation could not be used against the defendant due to a Fourth Amendment violation. Officers conducting the search told the resident of the home that they had a warrant, upon which she permitted the search. The Court held that by claiming to possess a warrant they did not have, the officers effectively negated any valid consent given by the resident (Bumper v. North Carolina, 391 U.S. 543, 1968).

In Johnson v. United States in 1948, the Court determined that anyone consenting to a warrantless search must first understand that such consent is voluntary. In that case, the defendant was confronted by officers demanding the right to search under color of office. The defendant permitted the search, during which narcotics were discovered. The Court found that the resulting consent was given in submission to authority rather than in recognition that the consent was freely and voluntarily offered (333 U.S. 10, 13, 1948).

Conclusion

Clearly, the right to protection from unreasonable search and seizure is not a simple issue, particularly when dealing with the search of vehicles. When combined with confusion over consent to search regulations and the differing opinions of various courts surrounding consent to search laws, it is often difficult to know if one has the right to refuse a search. While this issue will continue to be debated among courts for many years, it is clear that several states and the federal courts are taking a stronger stance against illegal search and seizure.