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Fourth Amendment Search & Seizure Criminal Investigations

The Fourth Amendment to the United States Constitution protects citizens from unreasonable searches and seizures and provides that warrants may only be granted upon findings of probable cause. The Fourth... more +
The Fourth Amendment to the United States Constitution protects citizens from unreasonable searches and seizures and provides that warrants may only be granted upon findings of probable cause. The Fourth Amendment applies to the States via the Due Process Clause of the Fourteenth Amendment.  Important areas of Fourth Amendment jurisprudence flow from questions surrounding the definitions of "search" and "seizure," the applicability of the Amendment to so-called "stop and frisk" situations, the level of control that must be exerted by law enforcement before an individual is deemed "seized," and the "exclusionary rule," just to name a few.    less -
Rumberger | Kirk

A Seizure by Any Other Name: US Supreme Court Affirms Centuries Old Rule Regarding the Use of Force and the Seizure of Criminal...

Rumberger | Kirk on

In a divided opinion, the United States Supreme Court recently corrected the Tenth Circuit’s divergence from centuries old law defining what constitutes a seizure by law enforcement for the purposes of Fourth Amendment...more

Best Best & Krieger LLP

Law Enforcement Can’t Use an Administrative Search Warrant in Ongoing Criminal Investigation

Ninth Circuit Affirms Motion to Suppress Evidence Seized by Deputies Assisting Code Enforcement Officers - Law enforcement officers violate the Fourth Amendment when their “primary purpose” in assisting code enforcement...more

Mintz - Privacy & Cybersecurity Viewpoints

Carpenter v. United States Privacy Case Pushes Supreme Court to Decide Fourth Amendment Protections of Cell Phone Metadata

The U.S. Supreme Court heard oral arguments in what may become one of the defining consumer privacy cases of our generation. The central question in Carpenter v. United States asks whether the government violates the Fourth...more

Bradley Arant Boult Cummings LLP

Drawing the Line: Supreme Court Addresses Major Privacy Rights in Cell Phone Dispute

On Wednesday, November 29, 2017, the Supreme Court heard arguments in the appeal of Timothy Carpenter, a man convicted and sentenced to 116 years for his role in a series of armed robberies. In proving his guilt, prosecutors...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Supreme Court Hears Oral Argument Today in Major Case Regarding Cell Phone Location Privacy

In Carpenter v. United States, federal investigators sought cellphone location data for a set of persons suspected in a series of robberies. The Fourth Amendment prevents the government from conducting unreasonable searches...more

Farella Braun + Martel LLP

The Fourth Amendment Implications of Sharing Server Space

The prosecution of Martin Shkreli, whom the BBC has called “the most hated man in America,” reveals some important lessons about the Fourth Amendment protections against search and seizure in the digital corporate context:...more

Patterson Belknap Webb & Tyler LLP

Exigent Circumstances Under the Fourth Amendment May Extend to the Need to Interview an Arrestee in Place

In a split decision in United States v. Delva, No. 15-cr-683 (Kearse, Winter, Jacobs), the Second Circuit held that the Fourth Amendment allowed law enforcement officers to seize cell phones and a number of letters that were...more

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