On Tuesday, the U.S. Supreme Court hears arguments in a case about the collection of DNA evidence, and whether the Fourth Amendment prohibits police from obtaining DNA samples before conviction without a warrant.
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President Lyndon Johnson and civil rights leader Martin Luther King Jr. discuss the Voting Rights Act in 1965. On Wednesday, the Supreme Court hears arguments on whether a key part of the law is still needed nearly a half century after its passage.
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A Miami-Dade narcotics detector canine gives a demonstration in 2011. The Supreme Court ruled Tuesday that courts should generally consider a drug dog's sniff as reliable if the dog has passed a certified training program that includes controlled performance tests.