Final answer:
The DEA needs to acquire a warrant in order to search Jane's home, as required by the Fourth Amendment.
Step-by-step explanation:
The DEA (Drug Enforcement Administration) needs to acquire a warrant in order to search Jane's home. The Fourth Amendment of the United States Constitution protects individuals from unreasonable searches and seizures, stating that 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.
A warrant is a legal document signed by a judge that allows the police to search and/or seize persons or property. Although there are exceptions to the warrant requirement, such as consent to search or exigent circumstances, in general, a warrant is necessary for the DEA to search Jane's home.